#CA3B18
Closest named color: Brick Orange (#C14A09). oklch(56.1% 0.185 34.3), rgb(202, 59, 24).
Aa
White text reads best on this color (5.06:1).
About this color
#CA3B18 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.185 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Orange (#C14A09), ΔE 0.031 away. White text reads best on it, at 5.06:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.185) |
| Temperature | warm |
| Nearest name | Brick Orange (#C14A09) |
| Black text | 4.15:1 |
| White text | 5.06:1 |
Values
| HEX | #CA3B18 |
| RGB | rgb(202, 59, 24) |
| HSL | hsl(12, 79%, 44%) |
| OKLCH | oklch(56.1% 0.185 34.3) |
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 #CA3B18 | 5.06:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #CA3B18 | 4.15:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #CA3B18 text on white | 5.06:1 | AA | Lc 73.7 | Content text, not long reading |
| #CA3B18 text on black | 4.15:1 | AA large text | Lc -28.0 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E5DF
oklch(93.6% 0.023 37.4)
-
Step 200
200
#F6CFC5
oklch(88.5% 0.046 34.7)
-
Step 300
300
#F1AE9D
oklch(81% 0.083 34.8)
-
Step 400
400
#E77F67
oklch(70.6% 0.134 34)
-
Step 500
500
#DD5A3C
oklch(63.2% 0.171 34.3)
-
Step 600
600 (this color)
#CA3B18
oklch(56.1% 0.185 34.3)
-
Step 700
700
#AD2905
oklch(49.1% 0.173 34.1)
-
Step 800
800
#8C250B
oklch(42.7% 0.143 34.4)
-
Step 900
900
#712513
oklch(37.8% 0.111 34.6)
-
Step 950
950
#42170D
oklch(27% 0.07 34.5)
#CA3B18 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) | #665A10 | 0.194 |
| Deuteranopia (no green cones) | #8A7A0C | 0.174 |
| Tritanopia (no blue cones) | #DF0035 | 0.065 |
| Achromatopsia (no color) | #6F6F6F | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CA3B18
#CA3B18
oklch(56.1% 0.185 34.3)
- #008398
#008398
oklch(56.1% 0.099 214.1)
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 #CA3B18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Orange #C14A09 ΔE 0.031
- Sinopia #BB3E03 ΔE 0.032
- Burnt Orange #C04E01 ΔE 0.039
- Dull Red #BB3F3F ΔE 0.043
- Rust Orange #C45508 ΔE 0.049
- Deep Orange #DC4D01 ΔE 0.053
- Burnt Siena #B75203 ΔE 0.054
- Faded Red #D3494E ΔE 0.054
Use #CA3B18 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.