#CA331E
Closest named color: Sinopia (#BB3E03). oklch(55.4% 0.191 31.2), rgb(202, 51, 30).
Aa
White text reads best on this color (5.24:1).
About this color
#CA331E is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.191 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.036 away. White text reads best on it, at 5.24:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.191) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 4.00:1 |
| White text | 5.24:1 |
Values
| HEX | #CA331E |
| RGB | rgb(202, 51, 30) |
| HSL | hsl(7, 74%, 45%) |
| OKLCH | oklch(55.4% 0.191 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 #CA331E | 5.24:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #CA331E | 4.00:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #CA331E text on white | 5.24:1 | AA | Lc 74.6 | Content text, not long reading |
| #CA331E text on black | 4.00:1 | AA large text | Lc -27.1 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FAE4E0
oklch(93.6% 0.025 29.9)
-
Step 200
200
#F7CEC6
oklch(88.4% 0.048 30.9)
-
Step 300
300
#F3AC9F
oklch(80.9% 0.086 30.6)
-
Step 400
400
#E97D6A
oklch(70.6% 0.137 31.2)
-
Step 500
500
#DF5641
oklch(63% 0.175 31.2)
-
Step 600
600 (this color)
#CA331E
oklch(55.4% 0.191 31.2)
-
Step 700
700
#AF2410
oklch(49.1% 0.178 31.3)
-
Step 800
800
#8E2112
oklch(42.7% 0.147 31.2)
-
Step 900
900
#722217
oklch(37.6% 0.115 30.8)
-
Step 950
950
#43160E
oklch(27% 0.072 32.1)
#CA331E 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) | #625719 | 0.203 |
| Deuteranopia (no green cones) | #877814 | 0.184 |
| Tritanopia (no blue cones) | #DF0030 | 0.053 |
| Achromatopsia (no color) | #6C6C6C | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CA331E
#CA331E
oklch(55.4% 0.191 31.2)
- #008193
#008193
oklch(55.4% 0.096 211.7)
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 #CA331E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.036
- Dull Red #BB3F3F ΔE 0.039
- Brick Orange #C14A09 ΔE 0.043
- Cherry #CF0234 ΔE 0.048
- Burnt Orange #C04E01 ΔE 0.052
- Crimson #DC143C ΔE 0.054
- Scarlet #BE0119 ΔE 0.054
- Dusty Red #B9484E ΔE 0.055
Use #CA331E 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.