#FF9900Vitamin C (#FF9900) is a light, saturated orange with an OKLCH hue of 65°, lightness 0.77 and chroma 0.174. It sits on the warm side of the color wheel. In practice it behaves as an accent color: strong in focal moments, dominant over large fields.
| HEX | #FF9900 |
|---|---|
| RGB | rgb(255, 153, 0) |
| HSL | hsl(36, 100%, 50%) |
| HSV | hsv(36, 100%, 100%) |
| CMYK | cmyk(0%, 40%, 100%, 0%) |
| CIE Lab | lab(72.3 30.2 77.2) |
| OKLCH | oklch(0.772 0.174 65) |
Under warm 2700K interior light Vitamin C shifts subtly: leans toward red; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 1.4), so it is a lighting-stable choice.
#ff9300 — ΔE 1.4, shifts subtly: leans toward red#ff9900 — ΔE 0.0, is virtually unchanged#ff9900 — ΔE 0.0, is virtually unchanged#ff9a05 — ΔE 0.2, is virtually unchangedTest Vitamin C 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 2.14:1 and against black 9.81:1, so black text is the stronger pairing. That pairing passes WCAG AA for body text. Avoid white 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.
#ffefe0 · #ffb973 · #ff9900 · #b26900 · #814a00 · #532e00
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.
#f5db6a · #fbbc3a · #ff9900 · #f07e3a · #db6952 · #c15761
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.
#ff9900 · #929d5e · #ab6500 · #586200 · #5e3500 · #252a00
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.
#f1d2b5 · #ff9900 · #009af0 · #996530 · #744816 · #4b2f10
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#e7f4ff · #ff9900 · #a99583 · #535e66 · #34210e · #000207
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.
#e9f3fc · #c1ccd6 · #95a2ad · #1d2d3a · #000b18 · #ff9900
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#d2d7b2 · #ff9900 · #c49299 · #23838f · #2c3b5c · #04110d
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#e7c9e4 · #ff9900 · #7c7dcc · #457182 · #3f364f · #1e0403
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#ccfef6 · #ff9900 · #00b1a2 · #7338a9 · #36005b · #000201
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#d8fde2 · #ff9900 · #42b171 · #00619a · #45003d · #000614
#FFAA4F · #FFB975 · #FFC895 · #FFD7B2 · #FFE5CD
#D17D00 · #A56100 · #7C4700 · #542F00 · #301800
#F1A14D · #E1A76F · #D2AD8B
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.