#B72010
Closest named color: Firebrick (#B22222). oklch(50.3% 0.188 30.4), rgb(183, 32, 16).
Aa
White text reads best on this color (6.50:1).
About this color
#B72010 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.188 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.015 away. White text reads best on it, at 6.50:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.188) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.22:1 |
| White text | 6.50:1 |
Values
| HEX | #B72010 |
| RGB | rgb(183, 32, 16) |
| HSL | hsl(6, 84%, 39%) |
| OKLCH | oklch(50.3% 0.188 30.4) |
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 #B72010 | 6.50:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #B72010 | 3.22:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #B72010 text on white | 6.50:1 | AA | Lc 80.5 | Fine for body text |
| #B72010 text on black | 3.22:1 | AA large text | Lc -21.4 | 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
#FEF3F1
oklch(97.2% 0.012 29.9)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F9CEC5
oklch(88.6% 0.05 31.8)
-
Step 300
300
#F6AB9E
oklch(81% 0.091 30.1)
-
Step 400
400
#ED7A68
oklch(70.7% 0.145 30.3)
-
Step 500
500
#E4513E
oklch(63.2% 0.186 30.3)
-
Step 600
600
#CF2B19
oklch(55.6% 0.202 30.5)
-
Step 700
700 (this color)
#B72010
oklch(50.3% 0.188 30.4)
-
Step 800
800
#911B0E
oklch(42.7% 0.155 30.5)
-
Step 900
900
#741F15
oklch(37.6% 0.12 30.2)
-
Step 950
950
#45140D
oklch(27.1% 0.077 30.8)
#B72010 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) | #53490A | 0.202 |
| Deuteranopia (no green cones) | #776900 | 0.182 |
| Tritanopia (no blue cones) | #CA001F | 0.041 |
| Achromatopsia (no color) | #5E5E5E | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B72010
#B72010
oklch(50.3% 0.188 30.4)
- #007180
#007180
oklch(50.3% 0.087 210.7)
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 #B72010, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.015
- Rufous #AE2012 ΔE 0.019
- Rusty Red #AF2F0D ΔE 0.022
- Scarlet #BE0119 ΔE 0.023
- Rust Red #AA2704 ΔE 0.027
- Lipstick Red #C0022F ΔE 0.039
- Brown #A52A2A ΔE 0.039
- Sinopia #BB3E03 ΔE 0.047
Use #B72010 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.