#0203E2Pure Blue (#0203E2) is a dark, vivid blue with an OKLCH hue of 264°, lightness 0.41 and chroma 0.285. It sits on the cool side of the color wheel. In practice it behaves as an accent color: strong in focal moments, dominant over large fields.
| HEX | #0203E2 |
|---|---|
| RGB | rgb(2, 3, 226) |
| HSL | hsl(240, 98%, 45%) |
| HSV | hsv(240, 99%, 89%) |
| CMYK | cmyk(99%, 99%, 0%, 11%) |
| CIE Lab | lab(28.3 71.8 -98.1) |
| OKLCH | oklch(0.414 0.285 264) |
Under warm 2700K interior light Pure Blue shifts noticeably: leans toward purple, loses intensity; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 2.5), so it is a lighting-stable choice.
#1812d5 — ΔE 2.5, shifts noticeably: leans toward purple, loses intensity#100ede — ΔE 1.1, shifts only faintly, with no single dominant change#0203e2 — ΔE 0.0, is virtually unchanged#0000e5 — ΔE 0.5, is virtually unchangedTest Pure Blue in the color lighting simulator — sweep it through daylight, warm 2700K light, 4000K LED, and shade alongside the rest of your palette.
Against white it measures 9.93:1 and against black 2.11:1, so white text is the stronger pairing. That pairing passes WCAG AA for body text. Avoid black text on this color entirely.
One color explored: close hues with real lightness and chroma structure, so the palette is the anchor through value rather than a set of colors.
#6998ff · #2c66ff · #0203e2 · #0100a3 · #000053 · #000015
The anchor's neighbours on the wheel — everything shares an undertone, so the chord carries color without anything having to be muted to get along.
#0077a1 · #005fa0 · #0203e2 · #3500a6 · #380071 · #300045
The mid-gap pairing — sage and mustard, terracotta and olive. A foil rotated 40–65° toward warm or cool: too far to be kin, too near to argue, carried by temperature and a deliberate value offset.
#c981e4 · #c320f3 · #86499d · #0203e2 · #01009d · #00005d
One deliberately opposed voice — a single restrained counterpoint across the wheel, or temperature against temperature where the anchor is too muted to carry a loud opposite.
#f7b900 · #5e87e0 · #51699c · #0203e2 · #04207c · #010c40
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#fff0d4 · #96a9cd · #6d6350 · #0203e2 · #223357 · #0e0600
This color as a ground rather than a subject — its own restraint held across a narrow value band, carrying one saturated voice from the opposite temperature.
#f7f1e6 · #d1cbbe · #a8a193 · #372e1c · #150c00 · #0203e2
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#d5d9b4 · #ec902f · #957bba · #82534d · #0203e2 · #140729
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#fff0d3 · #fd8200 · #646b00 · #0203e2 · #532600 · #030200
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffedeb · #ff7974 · #007a17 · #0203e2 · #004107 · #080000
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#ffecf3 · #ff6db0 · #805e00 · #0203e2 · #003e32 · #0e0600
#154CF1 · #3B73FF · #6897FF · #96B8FF · #C3D7FF
#0200C1 · #0100A1 · #010081 · #010063 · #000047
#0632C2 · #1B41A3 · #2E4883
Its chroma is high enough to carry accents, calls to action, and focal moments; large fields of it will dominate a composition. In palettes it pairs most predictably with its tonal ramp and analogous neighbors; reserve the complementary hue for small, deliberate contrast.