#B71108
Closest named color: Firebrick (#B22222). oklch(49.5% 0.195 29.5), rgb(183, 17, 8).
Aa
White text reads best on this color (6.78:1).
About this color
#B71108 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.195 and its hue 30°. 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 6.78:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.195) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.09:1 |
| White text | 6.78:1 |
Values
| HEX | #B71108 |
| RGB | rgb(183, 17, 8) |
| HSL | hsl(3, 92%, 37%) |
| OKLCH | oklch(49.5% 0.195 29.5) |
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 #B71108 | 6.78:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #B71108 | 3.09:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #B71108 text on white | 6.78:1 | AA | Lc 81.1 | Fine for body text |
| #B71108 text on black | 3.09:1 | AA large text | Lc -20.7 | 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
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FCE4DF
oklch(93.7% 0.027 31.7)
-
Step 200
200
#FACDC5
oklch(88.5% 0.052 29.9)
-
Step 300
300
#F8AA9D
oklch(81% 0.095 29.7)
-
Step 400
400
#F07867
oklch(70.8% 0.151 29.6)
-
Step 500
500
#E74D3C
oklch(63.2% 0.193 29.7)
-
Step 600
600
#D22217
oklch(55.5% 0.21 29.4)
-
Step 700
700 (this color)
#B71108
oklch(49.5% 0.195 29.5)
-
Step 800
800
#93140C
oklch(42.6% 0.162 29.4)
-
Step 900
900
#761C14
oklch(37.6% 0.126 29.4)
-
Step 950
950
#46130D
oklch(27.1% 0.08 29.8)
#B71108 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) | #4F4501 | 0.213 |
| Deuteranopia (no green cones) | #756700 | 0.189 |
| Tritanopia (no blue cones) | #CA0014 | 0.039 |
| Achromatopsia (no color) | #5B5B5B | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B71108
#B71108
oklch(49.5% 0.195 29.5)
- #006F7C
#006F7C
oklch(49.6% 0.085 208.9)
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 #B71108, 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 0.018
- Rufous #AE2012 ΔE 0.019
- Rust Red #AA2704 ΔE 0.030
- Rusty Red #AF2F0D ΔE 0.031
- Lipstick Red #C0022F ΔE 0.036
- Brown #A52A2A ΔE 0.040
- Burnt Red #9F2305 ΔE 0.049
Use #B71108 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.