#CD310C
Closest named color: Sinopia (#BB3E03). oklch(55.6% 0.197 33.3), rgb(205, 49, 12).
Aa
White text reads best on this color (5.19:1).
About this color
#CD310C is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.197 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.037 away. White text reads best on it, at 5.19:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.197) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 4.04:1 |
| White text | 5.19:1 |
Values
| HEX | #CD310C |
| RGB | rgb(205, 49, 12) |
| HSL | hsl(12, 89%, 43%) |
| OKLCH | oklch(55.6% 0.197 33.3) |
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 #CD310C | 5.19:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #CD310C | 4.04:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #CD310C text on white | 5.19:1 | AA | Lc 74.2 | Content text, not long reading |
| #CD310C text on black | 4.04:1 | AA large text | Lc -27.5 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F8CEC4
oklch(88.5% 0.05 33.6)
-
Step 300
300
#F4AC9C
oklch(80.9% 0.088 33)
-
Step 400
400
#EB7C64
oklch(70.6% 0.142 33.4)
-
Step 500
500
#E15538
oklch(63.1% 0.18 33.5)
-
Step 600
600 (this color)
#CD310C
oklch(55.6% 0.197 33.3)
-
Step 700
700
#AF2400
oklch(49.1% 0.179 33.5)
-
Step 800
800
#8F1F05
oklch(42.6% 0.151 33.4)
-
Step 900
900
#732111
oklch(37.6% 0.118 33)
-
Step 950
950
#44150B
oklch(27% 0.075 33.7)
#CD310C 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) | #635700 | 0.208 |
| Deuteranopia (no green cones) | #897900 | 0.186 |
| Tritanopia (no blue cones) | #E2002C | 0.054 |
| Achromatopsia (no color) | #6D6D6D | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CD310C
#CD310C
oklch(55.6% 0.197 33.3)
- #008296
#008296
oklch(55.7% 0.098 213.4)
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 #CD310C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.037
- Brick Orange #C14A09 ΔE 0.042
- Dull Red #BB3F3F ΔE 0.048
- Burnt Orange #C04E01 ΔE 0.051
- Cherry #CF0234 ΔE 0.053
- Crimson #DC143C ΔE 0.056
- Scarlet #BE0119 ΔE 0.058
- Deep Orange #DC4D01 ΔE 0.059
Use #CD310C 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.