#DD3C37
Closest named color: Imperial Red (#E63946). oklch(59.7% 0.199 27), rgb(221, 60, 55).
Aa
Black text reads best on this color (4.77:1).
About this color
#DD3C37 is a medium-dark, vivid red. In OKLCH its lightness is 60%, its chroma 0.199 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Imperial Red (#E63946), ΔE 0.024 away. Black text reads best on it, at 4.77:1.
| Hue family | Reds |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.199) |
| Temperature | warm |
| Nearest name | Imperial Red (#E63946) |
| Black text | 4.77:1 |
| White text | 4.39:1 |
Values
| HEX | #DD3C37 |
| RGB | rgb(221, 60, 55) |
| HSL | hsl(2, 71%, 54%) |
| OKLCH | oklch(59.7% 0.199 27) |
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 #DD3C37 | 4.39:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #DD3C37 | 4.77:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #DD3C37 text on white | 4.39:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #DD3C37 text on black | 4.77:1 | AA | Lc -32.6 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E0
oklch(93.5% 0.028 25.9)
-
Step 200
200
#FBCCC6
oklch(88.4% 0.054 26.7)
-
Step 300
300
#F9A89F
oklch(80.8% 0.097 26.4)
-
Step 400
400
#F2756A
oklch(70.7% 0.156 26.9)
-
Step 500
500 (this color)
#DD3C37
oklch(59.7% 0.199 27)
-
Step 600
600
#D51920
oklch(55.7% 0.216 26.9)
-
Step 700
700
#B70012
oklch(49% 0.2 27)
-
Step 800
800
#950D12
oklch(42.7% 0.166 27.1)
-
Step 900
900
#781917
oklch(37.8% 0.13 27)
-
Step 950
950
#47110F
oklch(27.1% 0.083 26.4)
#DD3C37 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) | #6C6235 | 0.213 |
| Deuteranopia (no green cones) | #948531 | 0.195 |
| Tritanopia (no blue cones) | #F3003D | 0.054 |
| Achromatopsia (no color) | #787878 | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #DD3C37
#DD3C37
oklch(59.7% 0.199 27)
- #00909E
#00909E
oklch(59.7% 0.102 206.9)
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 #DD3C37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Red #E63946 ΔE 0.024
- Faded Red #D3494E ΔE 0.030
- Tomato Red #EC2D01 ΔE 0.037
- Pale Red #D9544D ΔE 0.038
- Red Pantone #EF233C ΔE 0.039
- Dark Coral #CF524E ΔE 0.040
- Crimson #DC143C ΔE 0.043
- Deep Orange #DC4D01 ΔE 0.047
Use #DD3C37 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.