#B2121C
Closest named color: Firebrick (#B22222). oklch(48.7% 0.189 26.1), rgb(178, 18, 28).
Aa
White text reads best on this color (7.00:1).
About this color
#B2121C is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.189 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.014 away. White text reads best on it, at 7.00:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.189) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 2.99:1 |
| White text | 7.00:1 |
Values
| HEX | #B2121C |
| RGB | rgb(178, 18, 28) |
| HSL | hsl(356, 82%, 38%) |
| OKLCH | oklch(48.7% 0.189 26.1) |
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 #B2121C | 7.00:1 | AAA | Lc -87.2 | Fine for body text |
| Black text on #B2121C | 2.99:1 | Fails | Lc 21.9 | Dividers and decoration only |
| #B2121C text on white | 7.00:1 | AAA | Lc 82.2 | Fine for body text |
| #B2121C text on black | 2.99:1 | Fails | Lc -19.7 | 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
#FEF3F1
oklch(97.2% 0.012 29.9)
-
Step 100
100
#FBE4E1
oklch(93.7% 0.026 26.5)
-
Step 200
200
#F9CDC8
oklch(88.5% 0.05 25.7)
-
Step 300
300
#F6AAA2
oklch(80.9% 0.091 25.9)
-
Step 400
400
#EE786F
oklch(70.6% 0.147 25.9)
-
Step 500
500
#E44E49
oklch(63% 0.187 25.9)
-
Step 600
600
#D0272B
oklch(55.6% 0.203 26)
-
Step 700
700 (this color)
#B2121C
oklch(48.7% 0.189 26.1)
-
Step 800
800
#92181B
oklch(42.8% 0.157 26)
-
Step 900
900
#751D1C
oklch(37.7% 0.122 25.8)
-
Step 950
950
#451311
oklch(27% 0.077 26)
#B2121C 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) | #4C431A | 0.207 |
| Deuteranopia (no green cones) | #716512 | 0.189 |
| Tritanopia (no blue cones) | #C50019 | 0.038 |
| Achromatopsia (no color) | #595959 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B2121C
#B2121C
oklch(48.7% 0.189 26.1)
- #006D77
#006D77
oklch(48.8% 0.084 205.9)
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 #B2121C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.014
- Rufous #AE2012 ΔE 0.017
- Scarlet #BE0119 ΔE 0.024
- Brown #A52A2A ΔE 0.030
- Rust Red #AA2704 ΔE 0.030
- Lipstick Red #C0022F ΔE 0.035
- Rusty Red #AF2F0D ΔE 0.036
- Rouge #AB1239 ΔE 0.036
Use #B2121C 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.