#CB3C01
Closest named color: Brick Orange (#C14A09). oklch(56.3% 0.188 37.1), rgb(203, 60, 1).
Aa
White text reads best on this color (5.01:1).
About this color
#CB3C01 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.188 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Orange (#C14A09), ΔE 0.027 away. White text reads best on it, at 5.01:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.188) |
| Temperature | warm |
| Nearest name | Brick Orange (#C14A09) |
| Black text | 4.18:1 |
| White text | 5.01:1 |
Values
| HEX | #CB3C01 |
| RGB | rgb(203, 60, 1) |
| HSL | hsl(18, 99%, 40%) |
| OKLCH | oklch(56.3% 0.188 37.1) |
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 #CB3C01 | 5.01:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #CB3C01 | 4.18:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #CB3C01 text on white | 5.01:1 | AA | Lc 73.3 | Content text, not long reading |
| #CB3C01 text on black | 4.18:1 | AA large text | Lc -28.3 | 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
#FAE5DF
oklch(93.7% 0.025 36.5)
-
Step 200
200
#F6CFC4
oklch(88.5% 0.047 36.3)
-
Step 300
300
#F1AE9A
oklch(80.9% 0.084 37.3)
-
Step 400
400
#E78062
oklch(70.7% 0.134 37.1)
-
Step 500
500
#DD5A33
oklch(63.1% 0.173 36.9)
-
Step 600
600 (this color)
#CB3C01
oklch(56.3% 0.188 37.1)
-
Step 700
700
#A93000
oklch(49.1% 0.164 37)
-
Step 800
800
#8C2600
oklch(42.7% 0.143 37)
-
Step 900
900
#71250D
oklch(37.7% 0.113 37)
-
Step 950
950
#42170A
oklch(26.9% 0.071 37.3)
#CB3C01 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) | #685B00 | 0.191 |
| Deuteranopia (no green cones) | #8B7B00 | 0.172 |
| Tritanopia (no blue cones) | #E00034 | 0.071 |
| Achromatopsia (no color) | #6F6F6F | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB3C01
#CB3C01
oklch(56.3% 0.188 37.1)
- #00839C
#00839C
oklch(56.3% 0.101 217.4)
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 #CB3C01, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Orange #C14A09 ΔE 0.027
- Sinopia #BB3E03 ΔE 0.031
- Burnt Orange #C04E01 ΔE 0.035
- Rust Orange #C45508 ΔE 0.044
- Deep Orange #DC4D01 ΔE 0.048
- Burnt Siena #B75203 ΔE 0.050
- Dull Red #BB3F3F ΔE 0.051
- Rusty Orange #CD5909 ΔE 0.053
Use #CB3C01 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.