#C23440
Closest named color: Dull Red (#BB3F3F). oklch(54.5% 0.178 21), rgb(194, 52, 64).
Aa
White text reads best on this color (5.44:1).
About this color
#C23440 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.178 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.020 away. White text reads best on it, at 5.44:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.178) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.85:1 |
| White text | 5.44:1 |
Values
| HEX | #C23440 |
| RGB | rgb(194, 52, 64) |
| HSL | hsl(355, 58%, 48%) |
| OKLCH | oklch(54.5% 0.178 21) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #C23440 | 5.44:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #C23440 | 3.85:1 | AA large text | Lc 28.2 | Dividers and decoration only |
| #C23440 text on white | 5.44:1 | AA | Lc 75.9 | Fine for body text |
| #C23440 text on black | 3.85:1 | AA large text | Lc -25.9 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#F9E4E3
oklch(93.5% 0.023 20.9)
-
Step 200
200
#F5CECC
oklch(88.4% 0.044 21.5)
-
Step 300
300
#F0ACAA
oklch(80.8% 0.08 20.9)
-
Step 400
400
#E57E7E
oklch(70.7% 0.127 20.8)
-
Step 500
500
#DB585D
oklch(63.1% 0.165 20.9)
-
Step 600
600 (this color)
#C23440
oklch(54.5% 0.178 21)
-
Step 700
700
#AB2935
oklch(49.2% 0.166 21.1)
-
Step 800
800
#8B242C
oklch(42.8% 0.138 21.2)
-
Step 900
900
#6F2428
oklch(37.6% 0.106 20.8)
-
Step 950
950
#421618
oklch(27% 0.068 20.2)
#C23440 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #5C563F | 0.195 |
| Deuteranopia (no green cones) | #80753C | 0.179 |
| Tritanopia (no blue cones) | #D5003A | 0.045 |
| Achromatopsia (no color) | #6A6A6A | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C23440
#C23440
oklch(54.5% 0.178 21)
- #008086
#008086
oklch(54.5% 0.093 200.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #C23440, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.020
- Dusty Red #B9484E ΔE 0.033
- Cherry #CF0234 ΔE 0.039
- Lipstick Red #C0022F ΔE 0.043
- Ruby #CA0147 ΔE 0.045
- Dark Rose #B5485D ΔE 0.046
- Rose Red #BE013C ΔE 0.047
- Lipstick #D5174E ΔE 0.048
Use #C23440 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.