#DD2738
Closest named color: Crimson (#DC143C). oklch(58.1% 0.214 23.1), rgb(221, 39, 56).
Aa
White text reads best on this color (4.74:1).
About this color
#DD2738 is a medium-dark, vivid red. In OKLCH its lightness is 58%, its chroma 0.214 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.017 away. White text reads best on it, at 4.74:1.
| Hue family | Reds |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.214) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.42:1 |
| White text | 4.74:1 |
Values
| HEX | #DD2738 |
| RGB | rgb(221, 39, 56) |
| HSL | hsl(354, 73%, 51%) |
| OKLCH | oklch(58.1% 0.214 23.1) |
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 #DD2738 | 4.74:1 | AA | Lc -76.6 | Fine for body text |
| Black text on #DD2738 | 4.42:1 | AA large text | Lc 33.0 | Non-text elements, placeholder text |
| #DD2738 text on white | 4.74:1 | AA | Lc 71.1 | Content text, not long reading |
| #DD2738 text on black | 4.42:1 | AA large text | Lc -30.6 | 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 600.
-
Step 50
50
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E1
oklch(93.6% 0.028 23.2)
-
Step 200
200
#FBCCC9
oklch(88.5% 0.054 22.5)
-
Step 300
300
#F9A8A3
oklch(80.9% 0.097 23.3)
-
Step 400
400
#F17572
oklch(70.7% 0.154 23.2)
-
Step 500
500
#E8484D
oklch(63% 0.196 23.2)
-
Step 600
600 (this color)
#DD2738
oklch(58.1% 0.214 23.1)
-
Step 700
700
#B70023
oklch(49.2% 0.199 23.2)
-
Step 800
800
#940D1F
oklch(42.6% 0.164 22.9)
-
Step 900
900
#77191E
oklch(37.7% 0.128 23.3)
-
Step 950
950
#461112
oklch(26.9% 0.081 23.4)
#DD2738 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) | #625A37 | 0.235 |
| Deuteranopia (no green cones) | #8F8131 | 0.214 |
| Tritanopia (no blue cones) | #F30030 | 0.042 |
| Achromatopsia (no color) | #737373 | 0.215 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #DD2738
#DD2738
oklch(58.1% 0.214 23.1)
- #008B95
#008B95
oklch(58% 0.099 203.7)
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 #DD2738, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.017
- Imperial Red #E63946 ΔE 0.031
- Red Pantone #EF233C ΔE 0.035
- Lipstick #D5174E ΔE 0.040
- Cherry #CF0234 ΔE 0.042
- Faded Red #D3494E ΔE 0.043
- Tomato Red #EC2D01 ΔE 0.047
- Cherry Red #F7022A ΔE 0.049
Use #DD2738 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.