#DD3633
Closest named color: Imperial Red (#E63946). oklch(59.2% 0.204 26.8), rgb(221, 54, 51).
Aa
Black text reads best on this color (4.64:1).
About this color
#DD3633 is a medium-dark, vivid red. In OKLCH its lightness is 59%, its chroma 0.204 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Imperial Red (#E63946), ΔE 0.027 away. Black text reads best on it, at 4.64:1.
| Hue family | Reds |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.204) |
| Temperature | warm |
| Nearest name | Imperial Red (#E63946) |
| Black text | 4.64:1 |
| White text | 4.51:1 |
Values
| HEX | #DD3633 |
| RGB | rgb(221, 54, 51) |
| HSL | hsl(1, 71%, 53%) |
| OKLCH | oklch(59.2% 0.204 26.8) |
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 #DD3633 | 4.51:1 | AA | Lc -75.3 | Fine for body text |
| Black text on #DD3633 | 4.64:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #DD3633 text on white | 4.51:1 | AA | Lc 69.8 | Content text, not long reading |
| #DD3633 text on black | 4.64:1 | AA | Lc -31.8 | 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 600.
-
Step 50
50
#FEF3F1
oklch(97.2% 0.012 29.9)
-
Step 100
100
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#F9CDC7
oklch(88.5% 0.051 27.2)
-
Step 300
300
#F6AAA1
oklch(80.9% 0.091 26.8)
-
Step 400
400
#EE796E
oklch(70.8% 0.146 26.9)
-
Step 500
500
#E54E47
oklch(63.1% 0.188 26.6)
-
Step 600
600 (this color)
#DD3633
oklch(59.2% 0.204 26.8)
-
Step 700
700
#B4141A
oklch(49.2% 0.19 26.9)
-
Step 800
800
#921718
oklch(42.7% 0.158 26.8)
-
Step 900
900
#751D1A
oklch(37.6% 0.123 26.9)
-
Step 950
950
#451310
oklch(27% 0.078 27)
#DD3633 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) | #695F31 | 0.220 |
| Deuteranopia (no green cones) | #93842C | 0.201 |
| Tritanopia (no blue cones) | #F30038 | 0.049 |
| Achromatopsia (no color) | #767676 | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #DD3633
#DD3633
oklch(59.2% 0.204 26.8)
- #008E9C
#008E9C
oklch(59.1% 0.101 207)
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 #DD3633, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Red #E63946 ΔE 0.027
- Faded Red #D3494E ΔE 0.035
- Tomato Red #EC2D01 ΔE 0.036
- Crimson #DC143C ΔE 0.037
- Red Pantone #EF233C ΔE 0.038
- Pale Red #D9544D ΔE 0.045
- Dark Coral #CF524E ΔE 0.046
- Vermillion #F4320C ΔE 0.049
Use #DD3633 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.