#3300CCBusty Blue (#3300CC) is a dark, vivid blue with an OKLCH hue of 274°, lightness 0.4 and chroma 0.254. 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 | #3300CC |
|---|---|
| RGB | rgb(51, 0, 204) |
| HSL | hsl(255, 100%, 40%) |
| HSV | hsv(255, 100%, 80%) |
| CMYK | cmyk(75%, 100%, 0%, 20%) |
| CIE Lab | lab(26.9 67.7 -87.6) |
| OKLCH | oklch(0.402 0.254 274) |
Under warm 2700K interior light Busty Blue shifts subtly: leans toward purple, loses intensity; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 2.2), so it is a lighting-stable choice.
#380dc0 — ΔE 2.2, shifts subtly: leans toward purple, loses intensity#3708c9 — ΔE 1.0, shifts subtly: leans toward purple#3300cc — ΔE 0.0, is virtually unchanged#3300cf — ΔE 0.5, is virtually unchangedTest Busty 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 10.43:1 and against black 2.01:1, 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.
#7c8eff · #555df1 · #3300cc · #220092 · #0c0049 · #010011
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.
#0070ab · #0052b8 · #3300cc · #400092 · #3c0060 · #300037
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.
#cb7ecd · #c829ce · #884689 · #3300cc · #20008b · #0e0050
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.
#e7c100 · #707fd2 · #596392 · #3300cc · #1c1b6f · #090838
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f9f2d8 · #9ca5c7 · #66614f · #3300cc · #282e4f · #0a0500
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.
#f5f2e6 · #cfcbbe · #a5a192 · #322d1a · #110b00 · #3300cc
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#d2d9b4 · #ec952f · #9f7bb5 · #794d4a · #3300cc · #140522
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#fff2c3 · #eb8c00 · #526c00 · #3300cc · #492700 · #010400
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffede9 · #ff7858 · #00743f · #3300cc · #003c1d · #080000
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#ffecf0 · #ff6e98 · #745f00 · #3300cc · #003a34 · #0a0500
#4546DD · #5F6CED · #7D8FFD · #A2B2FF · #C9D4FF
#2A00AE · #210091 · #190075 · #11005A · #090041
#312CB0 · #343B95 · #3A4379
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.