#CF3B21
Closest named color: Brick Orange (#C14A09). oklch(57% 0.189 32.3), rgb(207, 59, 33).
Aa
White text reads best on this color (4.88:1).
About this color
#CF3B21 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.189 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Orange (#C14A09), ΔE 0.039 away. White text reads best on it, at 4.88:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.189) |
| Temperature | warm |
| Nearest name | Brick Orange (#C14A09) |
| Black text | 4.30:1 |
| White text | 4.88:1 |
Values
| HEX | #CF3B21 |
| RGB | rgb(207, 59, 33) |
| HSL | hsl(9, 73%, 47%) |
| OKLCH | oklch(57% 0.189 32.3) |
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 #CF3B21 | 4.88:1 | AA | Lc -78.0 | Fine for body text |
| Black text on #CF3B21 | 4.30:1 | AA large text | Lc 31.6 | Non-text elements, placeholder text |
| #CF3B21 text on white | 4.88:1 | AA | Lc 72.5 | Content text, not long reading |
| #CF3B21 text on black | 4.30:1 | AA large text | Lc -29.2 | 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
#F7CFC6
oklch(88.6% 0.047 32.8)
-
Step 300
300
#F2AD9E
oklch(80.9% 0.084 32.6)
-
Step 400
400
#E97E69
oklch(70.8% 0.136 32.3)
-
Step 500
500
#DE573F
oklch(63% 0.174 32.2)
-
Step 600
600 (this color)
#CF3B21
oklch(57% 0.189 32.3)
-
Step 700
700
#AE260C
oklch(49.1% 0.176 32.4)
-
Step 800
800
#8D220F
oklch(42.6% 0.146 32.3)
-
Step 900
900
#722315
oklch(37.7% 0.114 32.4)
-
Step 950
950
#43160E
oklch(27% 0.072 32.1)
#CF3B21 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) | #685C1C | 0.198 |
| Deuteranopia (no green cones) | #8C7D18 | 0.181 |
| Tritanopia (no blue cones) | #E40037 | 0.062 |
| Achromatopsia (no color) | #717171 | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CF3B21
#CF3B21
oklch(57% 0.189 32.3)
- #00869A
#00869A
oklch(57% 0.1 212.9)
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 #CF3B21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Orange #C14A09 ΔE 0.039
- Sinopia #BB3E03 ΔE 0.043
- Faded Red #D3494E ΔE 0.045
- Dull Red #BB3F3F ΔE 0.046
- Burnt Orange #C04E01 ΔE 0.046
- Deep Orange #DC4D01 ΔE 0.048
- Dark Coral #CF524E ΔE 0.049
- Rust Orange #C45508 ΔE 0.053
Use #CF3B21 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.