#B40E27
Closest named color: Firebrick (#B22222). oklch(49% 0.192 22.8), rgb(180, 14, 39).
Aa
White text reads best on this color (6.92:1).
About this color
#B40E27 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.192 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.019 away. White text reads best on it, at 6.92:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.192) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.03:1 |
| White text | 6.92:1 |
Values
| HEX | #B40E27 |
| RGB | rgb(180, 14, 39) |
| HSL | hsl(351, 86%, 38%) |
| OKLCH | oklch(49% 0.192 22.8) |
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 #B40E27 | 6.92:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #B40E27 | 3.03:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #B40E27 text on white | 6.92:1 | AA | Lc 81.7 | Fine for body text |
| #B40E27 text on black | 3.03:1 | AA large text | Lc -20.1 | 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
#FCE3E2
oklch(93.6% 0.028 20.4)
-
Step 200
200
#FACDC9
oklch(88.6% 0.051 24.1)
-
Step 300
300
#F7A9A5
oklch(80.9% 0.093 22.6)
-
Step 400
400
#EF7774
oklch(70.7% 0.149 23)
-
Step 500
500
#E54C50
oklch(63% 0.189 23)
-
Step 600
600
#D12235
oklch(55.6% 0.206 22.7)
-
Step 700
700 (this color)
#B40E27
oklch(49% 0.192 22.8)
-
Step 800
800
#921422
oklch(42.6% 0.158 22.6)
-
Step 900
900
#761C20
oklch(37.8% 0.124 23.2)
-
Step 950
950
#451213
oklch(26.9% 0.078 23)
#B40E27 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) | #4B4426 | 0.212 |
| Deuteranopia (no green cones) | #726620 | 0.193 |
| Tritanopia (no blue cones) | #C7001C | 0.039 |
| Achromatopsia (no color) | #5A5A5A | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B40E27
#B40E27
oklch(49% 0.192 22.8)
- #006E75
#006E75
oklch(49% 0.083 202.5)
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 #B40E27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.019
- Scarlet #BE0119 ΔE 0.022
- Lipstick Red #C0022F ΔE 0.026
- Rufous #AE2012 ΔE 0.027
- Rouge #AB1239 ΔE 0.029
- Rose Red #BE013C ΔE 0.033
- Brown #A52A2A ΔE 0.034
- Rust Red #AA2704 ΔE 0.041
Use #B40E27 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.