#0A0555Ravenclaw (#0A0555) is a very dark, saturated blue with an OKLCH hue of 270°, lightness 0.22 and chroma 0.132. It sits on the cool side of the color wheel. In practice it behaves as a grounding tone — suited to text, outlines, and shadowed surfaces.
| HEX | #0A0555 |
|---|---|
| RGB | rgb(10, 5, 85) |
| HSL | hsl(244, 89%, 18%) |
| HSV | hsv(244, 94%, 33%) |
| CMYK | cmyk(88%, 94%, 0%, 67%) |
| CIE Lab | lab(7.5 32.5 -45.5) |
| OKLCH | oklch(0.217 0.132 270) |
Under warm 2700K interior light Ravenclaw shifts subtly: leans toward purple; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 1.1), so it is a lighting-stable choice.
#0d0750 — ΔE 1.1, shifts subtly: leans toward purple#0c0653 — ΔE 0.5, is virtually unchanged#0a0555 — ΔE 0.0, is virtually unchanged#0a0556 — ΔE 0.2, is virtually unchangedTest Ravenclaw 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 18.01:1 and against black 1.17:1, 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.
#8798ca · #6072ab · #3c4c8c · #1c286d · #0a0555 · #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.
#004f63 · #003c5a · #002754 · #0a0555 · #100038 · #0c001d
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.
#ba95bf · #6d81c5 · #8b4b94 · #364689 · #422646 · #0a0555
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.
#e5c055 · #66708c · #445076 · #2d3449 · #0a0555 · #01001e
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#f6f2e4 · #b6bcce · #8d8a80 · #545a6d · #342f23 · #0a0555
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.
#f6f2e6 · #d0cbbe · #a6a192 · #332c1a · #120b00 · #0a0555
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#fcf1d4 · #d7ba6a · #a88600 · #705800 · #232d51 · #0a0555
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#c2e1c5 · #bcb872 · #795b4c · #222c22 · #0a0555 · #020a12
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffedea · #f9a394 · #44a05e · #1d6c37 · #4b211b · #0a0555
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#ffecf1 · #f5a0b9 · #a88600 · #006a5d · #3c2e00 · #0a0555
#233174 · #455692 · #6B7CB1 · #94A3D0 · #BFCBEF
#08054C · #060444 · #05043B · #040333 · #03032B
#0B1049 · #0D153C · #121830
As a deep tone it works for grounding elements — text, outlines, and shadowed surfaces — rather than open fields. In palettes it pairs most predictably with its tonal ramp and analogous neighbors; reserve the complementary hue for small, deliberate contrast.