#D03539
Closest named color: Crimson (#DC143C). oklch(56.9% 0.192 24.5), rgb(208, 53, 57).
Aa
White text reads best on this color (4.94:1).
About this color
#D03539 is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.192 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.034 away. White text reads best on it, at 4.94:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.192) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.25:1 |
| White text | 4.94:1 |
Values
| HEX | #D03539 |
| RGB | rgb(208, 53, 57) |
| HSL | hsl(358, 62%, 51%) |
| OKLCH | oklch(56.9% 0.192 24.5) |
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 #D03539 | 4.94:1 | AA | Lc -78.2 | Fine for body text |
| Black text on #D03539 | 4.25:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #D03539 text on white | 4.94:1 | AA | Lc 72.8 | Content text, not long reading |
| #D03539 text on black | 4.25:1 | AA large text | Lc -28.9 | 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
#FAE4E2
oklch(93.6% 0.024 23.9)
-
Step 200
200
#F8CECA
oklch(88.6% 0.048 24.5)
-
Step 300
300
#F3ABA5
oklch(80.8% 0.086 24.5)
-
Step 400
400
#EA7B75
oklch(70.7% 0.138 24.4)
-
Step 500
500
#E05351
oklch(63% 0.177 24.4)
-
Step 600
600 (this color)
#D03539
oklch(56.9% 0.192 24.5)
-
Step 700
700
#AF2028
oklch(49% 0.178 24.5)
-
Step 800
800
#8E1E22
oklch(42.6% 0.147 24.5)
-
Step 900
900
#722121
oklch(37.6% 0.114 24.4)
-
Step 950
950
#431514
oklch(27% 0.072 24.4)
#D03539 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) | #635B38 | 0.208 |
| Deuteranopia (no green cones) | #8A7C33 | 0.189 |
| Tritanopia (no blue cones) | #E50038 | 0.047 |
| Achromatopsia (no color) | #707070 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D03539
#D03539
oklch(56.9% 0.192 24.5)
- #008792
#008792
oklch(56.9% 0.097 204.9)
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 #D03539, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.034
- Faded Red #D3494E ΔE 0.035
- Dull Red #BB3F3F ΔE 0.040
- Cherry #CF0234 ΔE 0.040
- Lipstick #D5174E ΔE 0.045
- Dark Coral #CF524E ΔE 0.046
- Imperial Red #E63946 ΔE 0.047
- Dusty Red #B9484E ΔE 0.049
Use #D03539 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.