#D42B3F
Closest named color: Crimson (#DC143C). oklch(56.9% 0.203 21), rgb(212, 43, 63).
Aa
White text reads best on this color (4.98:1).
About this color
#D42B3F is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.203 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.020 away. White text reads best on it, at 4.98:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.203) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.21:1 |
| White text | 4.98:1 |
Values
| HEX | #D42B3F |
| RGB | rgb(212, 43, 63) |
| HSL | hsl(353, 66%, 50%) |
| OKLCH | oklch(56.9% 0.203 21) |
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 #D42B3F | 4.98:1 | AA | Lc -78.2 | Fine for body text |
| Black text on #D42B3F | 4.21:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #D42B3F text on white | 4.98:1 | AA | Lc 72.8 | Content text, not long reading |
| #D42B3F text on black | 4.21:1 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FBE3E2
oklch(93.5% 0.026 20.5)
-
Step 200
200
#F9CDCB
oklch(88.6% 0.05 21.2)
-
Step 300
300
#F6A9A7
oklch(80.8% 0.091 20.9)
-
Step 400
400
#EE7878
oklch(70.8% 0.146 21.4)
-
Step 500
500
#E44D56
oklch(63.1% 0.187 21)
-
Step 600
600 (this color)
#D42B3F
oklch(56.9% 0.203 21)
-
Step 700
700
#B3132E
oklch(49.1% 0.188 20.9)
-
Step 800
800
#911627
oklch(42.6% 0.156 20.7)
-
Step 900
900
#751D24
oklch(37.8% 0.121 21)
-
Step 950
950
#451315
oklch(27.1% 0.077 21.6)
#D42B3F 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) | #5F593E | 0.224 |
| Deuteranopia (no green cones) | #897C39 | 0.203 |
| Tritanopia (no blue cones) | #E90034 | 0.041 |
| Achromatopsia (no color) | #707070 | 0.204 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D42B3F
#D42B3F
oklch(56.9% 0.203 21)
- #00888E
#00888E
oklch(57% 0.097 200.3)
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 #D42B3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.020
- Lipstick #D5174E ΔE 0.030
- Cherry #CF0234 ΔE 0.031
- Faded Red #D3494E ΔE 0.041
- Imperial Red #E63946 ΔE 0.044
- Ruby #CA0147 ΔE 0.045
- Dull Red #BB3F3F ΔE 0.050
- Red Pantone #EF233C ΔE 0.052
Use #D42B3F 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.