#D3303C
Closest named color: Crimson (#DC143C). oklch(57% 0.198 22.7), rgb(211, 48, 60).
Aa
White text reads best on this color (4.93:1).
About this color
#D3303C is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.198 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.026 away. White text reads best on it, at 4.93:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.198) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.25:1 |
| White text | 4.93:1 |
Values
| HEX | #D3303C |
| RGB | rgb(211, 48, 60) |
| HSL | hsl(356, 65%, 51%) |
| OKLCH | oklch(57% 0.198 22.7) |
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 #D3303C | 4.93:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #D3303C | 4.25:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #D3303C text on white | 4.93:1 | AA | Lc 72.6 | Content text, not long reading |
| #D3303C text on black | 4.25:1 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FBE4E2
oklch(93.7% 0.025 23.6)
-
Step 200
200
#F9CDCA
oklch(88.5% 0.05 22.7)
-
Step 300
300
#F5AAA6
oklch(80.9% 0.089 22.6)
-
Step 400
400
#EC7976
oklch(70.7% 0.143 22.9)
-
Step 500
500
#E25053
oklch(63% 0.182 22.8)
-
Step 600
600 (this color)
#D3303C
oklch(57% 0.198 22.7)
-
Step 700
700
#B2192A
oklch(49.2% 0.185 22.9)
-
Step 800
800
#901A24
oklch(42.7% 0.152 22.8)
-
Step 900
900
#741E22
oklch(37.7% 0.119 22.6)
-
Step 950
950
#441414
oklch(27% 0.074 23.5)
#D3303C 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) | #625A3B | 0.216 |
| Deuteranopia (no green cones) | #8A7D36 | 0.199 |
| Tritanopia (no blue cones) | #E80036 | 0.043 |
| Achromatopsia (no color) | #707070 | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D3303C
#D3303C
oklch(57% 0.198 22.7)
- #008891
#008891
oklch(57.1% 0.097 203)
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 #D3303C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.026
- Cherry #CF0234 ΔE 0.036
- Faded Red #D3494E ΔE 0.037
- Lipstick #D5174E ΔE 0.038
- Imperial Red #E63946 ΔE 0.043
- Dull Red #BB3F3F ΔE 0.046
- Dark Coral #CF524E ΔE 0.050
- Ruby #CA0147 ΔE 0.051
Use #D3303C 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.