#B21842
Closest named color: Rouge (#AB1239). oklch(49.6% 0.185 13.5), rgb(178, 24, 66).
Aa
White text reads best on this color (6.76:1).
About this color
#B21842 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.185 and its hue 13°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.020 away. White text reads best on it, at 6.76:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.185) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 3.10:1 |
| White text | 6.76:1 |
Values
| HEX | #B21842 |
| RGB | rgb(178, 24, 66) |
| HSL | hsl(344, 76%, 40%) |
| OKLCH | oklch(49.6% 0.185 13.5) |
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 #B21842 | 6.76:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #B21842 | 3.10:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #B21842 text on white | 6.76:1 | AA | Lc 81.5 | Fine for body text |
| #B21842 text on black | 3.10:1 | AA large text | Lc -20.4 | 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 700.
-
Step 50
50
#FDF2F3
oklch(97% 0.012 11)
-
Step 100
100
#FBE3E5
oklch(93.6% 0.026 11.9)
-
Step 200
200
#F8CCCF
oklch(88.4% 0.05 13.5)
-
Step 300
300
#F5A9B0
oklch(81% 0.09 13.2)
-
Step 400
400
#EB7786
oklch(70.6% 0.143 13.3)
-
Step 500
500
#E14E68
oklch(63.1% 0.182 13.6)
-
Step 600
600
#CD2750
oklch(55.7% 0.199 13.5)
-
Step 700
700 (this color)
#B21842
oklch(49.6% 0.185 13.5)
-
Step 800
800
#8F1836
oklch(42.7% 0.153 13.2)
-
Step 900
900
#731D2E
oklch(37.7% 0.119 13.7)
-
Step 950
950
#44131B
oklch(27% 0.075 14)
#B21842 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) | #494742 | 0.207 |
| Deuteranopia (no green cones) | #6F663E | 0.188 |
| Tritanopia (no blue cones) | #C3002C | 0.042 |
| Achromatopsia (no color) | #5B5B5B | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B21842
#B21842
oklch(49.6% 0.185 13.5)
- #007170
#007170
oklch(49.6% 0.085 193.7)
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 #B21842, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.020
- Raspberry #B00149 ΔE 0.022
- Rose Red #BE013C ΔE 0.024
- Lipstick Red #C0022F ΔE 0.035
- Firebrick #B22222 ΔE 0.043
- Brown #A52A2A ΔE 0.047
- Scarlet #BE0119 ΔE 0.048
- Ruby #CA0147 ΔE 0.048
Use #B21842 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.