#D42721
Closest named color: Crimson (#DC143C). oklch(56.3% 0.208 28.4), rgb(212, 39, 33).
Aa
White text reads best on this color (5.10:1).
About this color
#D42721 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.208 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.035 away. White text reads best on it, at 5.10:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.208) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.11:1 |
| White text | 5.10:1 |
Values
| HEX | #D42721 |
| RGB | rgb(212, 39, 33) |
| HSL | hsl(2, 73%, 48%) |
| OKLCH | oklch(56.3% 0.208 28.4) |
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 #D42721 | 5.10:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #D42721 | 4.11:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #D42721 text on white | 5.10:1 | AA | Lc 73.4 | Content text, not long reading |
| #D42721 text on black | 4.11:1 | AA large text | Lc -28.3 | 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
#FEF3F1
oklch(97.2% 0.012 29.9)
-
Step 100
100
#FCE4E0
oklch(93.7% 0.027 28.9)
-
Step 200
200
#FACDC6
oklch(88.5% 0.052 28.5)
-
Step 300
300
#F7AA9F
oklch(80.9% 0.093 28.3)
-
Step 400
400
#EF786A
oklch(70.7% 0.149 28.3)
-
Step 500
500
#E64D41
oklch(63.1% 0.191 28.3)
-
Step 600
600 (this color)
#D42721
oklch(56.3% 0.208 28.4)
-
Step 700
700
#B51010
oklch(49.1% 0.194 28.4)
-
Step 800
800
#931512
oklch(42.7% 0.16 28.2)
-
Step 900
900
#761C17
oklch(37.7% 0.125 28)
-
Step 950
950
#46130E
oklch(27.1% 0.079 28.9)
#D42721 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) | #61561D | 0.225 |
| Deuteranopia (no green cones) | #8A7B16 | 0.204 |
| Tritanopia (no blue cones) | #EA0029 | 0.044 |
| Achromatopsia (no color) | #6E6E6E | 0.209 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D42721
#D42721
oklch(56.3% 0.208 28.4)
- #008593
#008593
oklch(56.4% 0.097 207.7)
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 #D42721, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.035
- Cherry #CF0234 ΔE 0.038
- Tomato Red #EC2D01 ΔE 0.052
- Dull Red #BB3F3F ΔE 0.053
- Faded Red #D3494E ΔE 0.053
- Imperial Red #E63946 ΔE 0.054
- Lipstick #D5174E ΔE 0.054
- Sinopia #BB3E03 ΔE 0.057
Use #D42721 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.