#C23F2C
Closest named color: Dull Red (#BB3F3F). oklch(55.3% 0.171 31.2), rgb(194, 63, 44).
Aa
White text reads best on this color (5.19:1).
About this color
#C23F2C is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.171 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.025 away. White text reads best on it, at 5.19:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.171) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 4.04:1 |
| White text | 5.19:1 |
Values
| HEX | #C23F2C |
| RGB | rgb(194, 63, 44) |
| HSL | hsl(8, 63%, 47%) |
| OKLCH | oklch(55.3% 0.171 31.2) |
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 #C23F2C | 5.19:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #C23F2C | 4.04:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #C23F2C text on white | 5.19:1 | AA | Lc 74.7 | Content text, not long reading |
| #C23F2C text on black | 4.04:1 | AA large text | Lc -27.0 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F8E5E1
oklch(93.6% 0.022 31.8)
-
Step 200
200
#F4CFC8
oklch(88.4% 0.043 30.5)
-
Step 300
300
#EEAFA2
oklch(80.9% 0.077 31.9)
-
Step 400
400
#E38270
oklch(70.8% 0.123 31.5)
-
Step 500
500
#D85E4B
oklch(63.1% 0.158 30.9)
-
Step 600
600 (this color)
#C23F2C
oklch(55.3% 0.171 31.2)
-
Step 700
700
#A83020
oklch(49.1% 0.159 30.9)
-
Step 800
800
#882A1C
oklch(42.7% 0.131 31.3)
-
Step 900
900
#6E281D
oklch(37.8% 0.102 31.2)
-
Step 950
950
#411812
oklch(27% 0.065 30.3)
#C23F2C 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) | #655A29 | 0.178 |
| Deuteranopia (no green cones) | #857727 | 0.163 |
| Tritanopia (no blue cones) | #D6153C | 0.061 |
| Achromatopsia (no color) | #6D6D6D | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C23F2C
#C23F2C
oklch(55.3% 0.171 31.2)
- #008192
#008192
oklch(55.3% 0.096 210.8)
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 #C23F2C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.025
- Sinopia #BB3E03 ΔE 0.028
- Brick Orange #C14A09 ΔE 0.034
- Dusty Red #B9484E ΔE 0.039
- Burnt Orange #C04E01 ΔE 0.042
- Faded Red #D3494E ΔE 0.052
- Burnt Siena #B75203 ΔE 0.052
- Dark Coral #CF524E ΔE 0.053
Use #C23F2C 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.