#1D5699Blue Chip (#1D5699) is a dark, soft blue with an OKLCH hue of 255°, lightness 0.45 and chroma 0.124. It sits on the cool side of the color wheel. In practice it behaves as a mid-weight working color for secondary surfaces and editorial blocks.
| HEX | #1D5699 |
|---|---|
| RGB | rgb(29, 86, 153) |
| HSL | hsl(212, 68%, 36%) |
| HSV | hsv(212, 81%, 60%) |
| CMYK | cmyk(81%, 44%, 0%, 40%) |
| CIE Lab | lab(36.4 6.9 -41.8) |
| OKLCH | oklch(0.453 0.124 255) |
Under warm 2700K interior light Blue Chip 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 ≈ 1.7), so it is a lighting-stable choice.
#2a5590 — ΔE 1.7, shifts subtly: leans toward purple, loses intensity#255796 — ΔE 0.8, is virtually unchanged#1d5699 — ΔE 0.0, is virtually unchanged#1c569b — ΔE 0.3, is virtually unchangedTest Blue Chip 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 7.39:1 and against black 2.84:1, 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.
#85afe6 · #5989c5 · #1d5699 · #053f7d · #002049 · #00051c
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.
#2284a2 · #106e9f · #1d5699 · #303f83 · #342a69 · #31174d
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.
#baa4d1 · #a47bcb · #7c698f · #1d5699 · #0a3b71 · #00214b
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.
#efb45e · #7d99bc · #67778b · #1d5699 · #1f3a5b · #0f1e32
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f9f0e5 · #a4b0be · #746f67 · #1d5699 · #343f4e · #020100
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.
#f8f1e6 · #d4cbbf · #aba294 · #3c301f · #1a0e01 · #1d5699
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#ffefda · #d3a564 · #966400 · #1d5699 · #553700 · #00051c
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#ffefda · #e39a79 · #7a7200 · #1d5699 · #692600 · #050300
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffeded · #e6949a · #4e7f2e · #1d5699 · #234901 · #180002
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#ffecf6 · #dc95bd · #966400 · #1d5699 · #004a34 · #130700
#4070AD · #608AC0 · #80A5D3 · #A2C0E7 · #C3DBFA
#124783 · #08396E · #002B5A · #001D44 · #00112F
#2D578B · #3A587D · #45586F
Its moderate chroma lets it work in mid-size areas — upholstery, secondary UI surfaces, editorial blocks — without overwhelming neighbors. In palettes it pairs most predictably with its tonal ramp and analogous neighbors; reserve the complementary hue for small, deliberate contrast.