#B40D25
Closest named color: Firebrick (#B22222). oklch(49% 0.192 23.3), rgb(180, 13, 37).
Aa
White text reads best on this color (6.94:1).
About this color
#B40D25 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 0.018 away. White text reads best on it, at 6.94:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.192) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.02:1 |
| White text | 6.94:1 |
Values
| HEX | #B40D25 |
| RGB | rgb(180, 13, 37) |
| HSL | hsl(351, 87%, 38%) |
| OKLCH | oklch(49% 0.192 23.3) |
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 #B40D25 | 6.94:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #B40D25 | 3.02:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #B40D25 text on white | 6.94:1 | AA | Lc 81.8 | Fine for body text |
| #B40D25 text on black | 3.02:1 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E1
oklch(93.6% 0.028 23.2)
-
Step 200
200
#FACDC9
oklch(88.6% 0.051 24.1)
-
Step 300
300
#F7A9A4
oklch(80.9% 0.093 23.4)
-
Step 400
400
#EF7773
oklch(70.7% 0.149 23.5)
-
Step 500
500
#E64C4F
oklch(63.2% 0.19 23.4)
-
Step 600
600
#D12233
oklch(55.6% 0.206 23.2)
-
Step 700
700 (this color)
#B40D25
oklch(49% 0.192 23.3)
-
Step 800
800
#921420
oklch(42.6% 0.159 23.4)
-
Step 900
900
#761C1F
oklch(37.8% 0.124 23.8)
-
Step 950
950
#451213
oklch(26.9% 0.078 23)
#B40D25 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) | #4B4424 | 0.212 |
| Deuteranopia (no green cones) | #72651E | 0.191 |
| Tritanopia (no blue cones) | #C7001A | 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°).
- #B40D25
#B40D25
oklch(49% 0.192 23.3)
- #006E76
#006E76
oklch(49.1% 0.084 203.6)
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 #B40D25, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.018
- Scarlet #BE0119 ΔE 0.022
- Rufous #AE2012 ΔE 0.026
- Lipstick Red #C0022F ΔE 0.027
- Rouge #AB1239 ΔE 0.030
- Rose Red #BE013C ΔE 0.034
- Brown #A52A2A ΔE 0.034
- Rust Red #AA2704 ΔE 0.040
Use #B40D25 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.