#030AA7Cobalt (#030AA7) is a very dark, vivid blue with an OKLCH hue of 265°, lightness 0.34 and chroma 0.223. 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 | #030AA7 |
|---|---|
| RGB | rgb(3, 10, 167) |
| HSL | hsl(237, 96%, 33%) |
| HSV | hsv(237, 98%, 65%) |
| CMYK | cmyk(98%, 94%, 0%, 35%) |
| CIE Lab | lab(20.1 55 -76.9) |
| OKLCH | oklch(0.336 0.223 265) |
Under warm 2700K interior light Cobalt 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), so it is a lighting-stable choice.
#11119d — ΔE 2.0, shifts subtly: leans toward purple, loses intensity#0b0fa4 — ΔE 0.9, is virtually unchanged#030aa7 — ΔE 0.0, is virtually unchanged#0108a9 — ΔE 0.4, is virtually unchangedAgainst white it measures 13.08:1 and against black 1.61:1, 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.
#6a95f9 · #3e6cdc · #1640bf · #030aa7 · #01004e · #000014
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.
#005f82 · #00497e · #030aa7 · #230076 · #220049 · #180025
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.
#c891dd · #5384f6 · #9e2ec1 · #693b7a · #030aa7 · #01006a
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.
#f6b900 · #5271b5 · #42537a · #030aa7 · #021054 · #000022
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#fcf1db · #aab8d6 · #888171 · #404e6c · #030aa7 · #291f0b
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 · #362e1c · #150c00 · #030aa7
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#d6dab4 · #f29130 · #876caa · #634039 · #030aa7 · #120627
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#fff0d3 · #ff9c54 · #808a00 · #7a3b00 · #030aa7 · #202300
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ffedeb · #ff968f · #009d26 · #006013 · #030aa7 · #460004
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#ffecf3 · #ff8ebd · #a47a00 · #005d4c · #030aa7 · #2c1e00
#1943BD · #3E69D2 · #648CE7 · #8CAFFB · #BDD3FF
#030193 · #02007E · #010068 · #010054 · #010040
#07258F · #142F78 · #223560
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.