#CB3F17
Closest named color: Brick Orange (#C14A09). oklch(56.7% 0.183 35.5), rgb(203, 63, 23).
Aa
White text reads best on this color (4.92:1).
About this color
#CB3F17 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.183 and its hue 35°. 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 4.92:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.183) |
| Temperature | warm |
| Nearest name | Brick Orange (#C14A09) |
| Black text | 4.26:1 |
| White text | 4.92:1 |
Values
| HEX | #CB3F17 |
| RGB | rgb(203, 63, 23) |
| HSL | hsl(13, 80%, 44%) |
| OKLCH | oklch(56.7% 0.183 35.5) |
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 #CB3F17 | 4.92:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #CB3F17 | 4.26:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #CB3F17 text on white | 4.92:1 | AA | Lc 72.9 | Content text, not long reading |
| #CB3F17 text on black | 4.26:1 | AA large text | Lc -28.8 | 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
#F9E5DF
oklch(93.6% 0.023 37.4)
-
Step 200
200
#F6CFC5
oklch(88.5% 0.046 34.7)
-
Step 300
300
#F1AE9C
oklch(80.9% 0.083 35.6)
-
Step 400
400
#E68066
oklch(70.6% 0.132 35.3)
-
Step 500
500
#DC5B3A
oklch(63.1% 0.169 35.4)
-
Step 600
600 (this color)
#CB3F17
oklch(56.7% 0.183 35.5)
-
Step 700
700
#AC2C00
oklch(49.2% 0.17 35.6)
-
Step 800
800
#8B2608
oklch(42.6% 0.141 35.4)
-
Step 900
900
#702612
oklch(37.7% 0.109 35.8)
-
Step 950
950
#42170C
oklch(27% 0.07 35.4)
#CB3F17 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) | #695D0E | 0.189 |
| Deuteranopia (no green cones) | #8B7C0B | 0.172 |
| Tritanopia (no blue cones) | #E00238 | 0.071 |
| Achromatopsia (no color) | #707070 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CB3F17
#CB3F17
oklch(56.7% 0.183 35.5)
- #00859C
#00859C
oklch(56.8% 0.101 215.5)
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 #CB3F17, 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 0.034
- Burnt Orange #C04E01 ΔE 0.035
- Rust Orange #C45508 ΔE 0.043
- Deep Orange #DC4D01 ΔE 0.046
- Dull Red #BB3F3F ΔE 0.047
- Burnt Siena #B75203 ΔE 0.051
- Rusty Orange #CD5909 ΔE 0.051
Use #CB3F17 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.