#B4122F
Closest named color: Firebrick (#B22222). oklch(49.3% 0.189 20.5), rgb(180, 18, 47).
Aa
White text reads best on this color (6.84:1).
About this color
#B4122F is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.189 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.023 away. White text reads best on it, at 6.84:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.189) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.06:1 |
| White text | 6.84:1 |
Values
| HEX | #B4122F |
| RGB | rgb(180, 18, 47) |
| HSL | hsl(349, 82%, 39%) |
| OKLCH | oklch(49.3% 0.189 20.5) |
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 #B4122F | 6.84:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #B4122F | 3.06:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #B4122F text on white | 6.84:1 | AA | Lc 81.6 | Fine for body text |
| #B4122F text on black | 3.06:1 | AA large text | Lc -20.3 | 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 700.
-
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
#F6A9A8
oklch(80.9% 0.091 20.1)
-
Step 400
400
#EE7779
oklch(70.7% 0.147 20.5)
-
Step 500
500
#E44C57
oklch(63% 0.188 20.3)
-
Step 600
600
#D0243C
oklch(55.7% 0.204 20.7)
-
Step 700
700 (this color)
#B4122F
oklch(49.3% 0.189 20.5)
-
Step 800
800
#921527
oklch(42.8% 0.158 20.6)
-
Step 900
900
#751C24
oklch(37.7% 0.122 20.6)
-
Step 950
950
#451316
oklch(27.1% 0.077 20.4)
#B4122F 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) | #4B452E | 0.210 |
| Deuteranopia (no green cones) | #716629 | 0.192 |
| Tritanopia (no blue cones) | #C60021 | 0.038 |
| Achromatopsia (no color) | #5A5A5A | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4122F
#B4122F
oklch(49.3% 0.189 20.5)
- #006F74
#006F74
oklch(49.2% 0.084 200.3)
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 #B4122F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.023
- Rouge #AB1239 ΔE 0.024
- Lipstick Red #C0022F ΔE 0.024
- Rose Red #BE013C ΔE 0.027
- Scarlet #BE0119 ΔE 0.027
- Rufous #AE2012 ΔE 0.033
- Brown #A52A2A ΔE 0.036
- Raspberry #B00149 ΔE 0.042
Use #B4122F 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.