#CF3B00
Closest named color: Brick Orange (#C14A09). oklch(56.9% 0.192 36.5), rgb(207, 59, 0).
Aa
White text reads best on this color (4.90:1).
About this color
#CF3B00 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.192 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Orange (#C14A09), ΔE 0.032 away. White text reads best on it, at 4.90:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.192) |
| Temperature | warm |
| Nearest name | Brick Orange (#C14A09) |
| Black text | 4.27:1 |
| White text | 4.90:1 |
Values
| HEX | #CF3B00 |
| RGB | rgb(207, 59, 0) |
| HSL | hsl(17, 100%, 41%) |
| OKLCH | oklch(56.9% 0.192 36.5) |
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 #CF3B00 | 4.90:1 | AA | Lc -78.0 | Fine for body text |
| Black text on #CF3B00 | 4.27:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #CF3B00 text on white | 4.90:1 | AA | Lc 72.6 | Content text, not long reading |
| #CF3B00 text on black | 4.27:1 | AA large text | Lc -29.1 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FAE5DE
oklch(93.7% 0.025 39.4)
-
Step 200
200
#F7CFC3
oklch(88.5% 0.048 37.3)
-
Step 300
300
#F3AD9A
oklch(80.9% 0.087 35.8)
-
Step 400
400
#E97E61
oklch(70.6% 0.139 36.1)
-
Step 500
500
#DF5831
oklch(63.1% 0.177 36.5)
-
Step 600
600 (this color)
#CF3B00
oklch(56.9% 0.192 36.5)
-
Step 700
700
#AA2F00
oklch(49.1% 0.166 36.6)
-
Step 800
800
#8C2500
oklch(42.6% 0.144 36.6)
-
Step 900
900
#72240C
oklch(37.8% 0.115 36.6)
-
Step 950
950
#431609
oklch(26.9% 0.073 36.7)
#CF3B00 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) | #695C00 | 0.197 |
| Deuteranopia (no green cones) | #8D7D00 | 0.177 |
| Tritanopia (no blue cones) | #E50033 | 0.069 |
| Achromatopsia (no color) | #717171 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CF3B00
#CF3B00
oklch(56.9% 0.192 36.5)
- #00859D
#00859D
oklch(56.8% 0.101 216.4)
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 #CF3B00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Orange #C14A09 ΔE 0.032
- Sinopia #BB3E03 ΔE 0.039
- Burnt Orange #C04E01 ΔE 0.039
- Deep Orange #DC4D01 ΔE 0.043
- Rust Orange #C45508 ΔE 0.046
- Rusty Orange #CD5909 ΔE 0.052
- Dull Red #BB3F3F ΔE 0.056
- Tomato Red #EC2D01 ΔE 0.056
Use #CF3B00 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.