#C42B2DKnockout (#C42B2D) is a mid-tone, saturated red with an OKLCH hue of 26°, lightness 0.54 and chroma 0.189. 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 | #C42B2D |
|---|---|
| RGB | rgb(196, 43, 45) |
| HSL | hsl(359, 64%, 47%) |
| HSV | hsv(359, 78%, 77%) |
| CMYK | cmyk(0%, 78%, 77%, 23%) |
| CIE Lab | lab(43.7 59 37.4) |
| OKLCH | oklch(0.538 0.189 26) |
Under warm 2700K interior light Knockout is virtually unchanged; in north-facing or shaded light it is virtually unchanged. Overall drift across common illuminants is small (max ΔE ≈ 0.7), so it is a lighting-stable choice.
#c42528 — ΔE 0.7, is virtually unchanged#c7292b — ΔE 0.6, is virtually unchanged#c42b2d — ΔE 0.0, is virtually unchanged#c52c2e — ΔE 0.3, is virtually unchangedTest Knockout 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 5.63:1 and against black 3.73:1, so white text is the stronger pairing. That pairing passes WCAG AA for body text.
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.
#ffa9a1 · #f16e66 · #c42b2d · #a00315 · #670008 · #320001
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.
#d3771e · #ce541a · #c42b2d · #a71a46 · #880f53 · #680a57
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.
#df9c00 · #ab8444 · #c42b2d · #97181c · #6e0009 · #2c1b00
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.
#00ddf0 · #af827d · #c42b2d · #7f3430 · #591917 · #300707
The anchor as the only color in the room. True neutrals or complement-warmed near-neutrals let it stay dominant.
#def7fb · #9e807d · #c42b2d · #48585a · #351917 · #000304
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.
#e6f5f7 · #bccdcf · #8ea1a4 · #0f2a2d · #000709 · #c42b2d
The opposite hue on the perceptual wheel, tempered to field strength — warm/cool tension without vibration.
#d4faff · #009aa8 · #c42b2d · #006069 · #00282d · #080000
The complement's two neighbours instead of the complement itself — strong contrast with a lower clash risk.
#d9cbee · #85c3b7 · #65a1cf · #c42b2d · #4f5a82 · #1c040f
Three hues spaced evenly around the wheel; the anchor leads and the other two are held at supporting strength.
#dafddb · #3fa04c · #c42b2d · #2246bb · #04086e · #000200
Two complementary pairs offset by 90° — the richest chord, kept usable by a strict lightness hierarchy.
#eff7cc · #859200 · #c42b2d · #006069 · #2c005d · #000304
#D4524C · #E47269 · #F29087 · #FFAEA5 · #FFD1CB
#A71A1F · #8B0411 · #6C0009 · #4E0004 · #330001
#B4433E · #A4524C · #925E59
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.