#CF2803
Closest named color: Sinopia (#BB3E03). oklch(55.3% 0.205 32.4), rgb(207, 40, 3).
Aa
White text reads best on this color (5.30:1).
About this color
#CF2803 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.205 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.044 away. White text reads best on it, at 5.30:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.205) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.95:1 |
| White text | 5.30:1 |
Values
| HEX | #CF2803 |
| RGB | rgb(207, 40, 3) |
| HSL | hsl(11, 97%, 41%) |
| OKLCH | oklch(55.3% 0.205 32.4) |
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 #CF2803 | 5.30:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #CF2803 | 3.95:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #CF2803 text on white | 5.30:1 | AA | Lc 74.5 | Content text, not long reading |
| #CF2803 text on black | 3.95:1 | AA large text | Lc -27.2 | 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
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F9CEC4
oklch(88.6% 0.051 33.3)
-
Step 300
300
#F6AB9B
oklch(80.9% 0.092 32.5)
-
Step 400
400
#EE7A63
oklch(70.7% 0.148 32.5)
-
Step 500
500
#E55036
oklch(63.1% 0.189 32.2)
-
Step 600
600 (this color)
#CF2803
oklch(55.3% 0.205 32.4)
-
Step 700
700
#B11F00
oklch(49.1% 0.184 32.4)
-
Step 800
800
#921A02
oklch(42.8% 0.158 32.5)
-
Step 900
900
#751E0F
oklch(37.6% 0.123 32.2)
-
Step 950
950
#45140B
oklch(27% 0.078 32.5)
#CF2803 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) | #605400 | 0.219 |
| Deuteranopia (no green cones) | #887800 | 0.195 |
| Tritanopia (no blue cones) | #E50024 | 0.049 |
| Achromatopsia (no color) | #6B6B6B | 0.207 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CF2803
#CF2803
oklch(55.3% 0.205 32.4)
- #008193
#008193
oklch(55.4% 0.096 211.7)
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 #CF2803, closest first.
No curated palette has a color within ΔE 0.04 of #CF2803.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.044
- Cherry #CF0234 ΔE 0.047
- Brick Orange #C14A09 ΔE 0.051
- Crimson #DC143C ΔE 0.052
- Dull Red #BB3F3F ΔE 0.053
- Scarlet #BE0119 ΔE 0.053
- Lipstick Red #C0022F ΔE 0.059
- Burnt Orange #C04E01 ΔE 0.060
Use #CF2803 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.