#B71E17
Closest named color: Firebrick (#B22222). oklch(50.2% 0.188 28.9), rgb(183, 30, 23).
Aa
White text reads best on this color (6.53:1).
About this color
#B71E17 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.188 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.012 away. White text reads best on it, at 6.53:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.188) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.21:1 |
| White text | 6.53:1 |
Values
| HEX | #B71E17 |
| RGB | rgb(183, 30, 23) |
| HSL | hsl(3, 78%, 40%) |
| OKLCH | oklch(50.2% 0.188 28.9) |
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 #B71E17 | 6.53:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #B71E17 | 3.21:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #B71E17 text on white | 6.53:1 | AA | Lc 80.6 | Fine for body text |
| #B71E17 text on black | 3.21:1 | AA large text | Lc -21.3 | 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
#FEF3F1
oklch(97.2% 0.012 29.9)
-
Step 100
100
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#F9CDC6
oklch(88.4% 0.051 28.7)
-
Step 300
300
#F6AB9F
oklch(81% 0.091 29.3)
-
Step 400
400
#ED7A6B
oklch(70.7% 0.145 28.9)
-
Step 500
500
#E45042
oklch(63.1% 0.186 28.8)
-
Step 600
600
#CF2A20
oklch(55.6% 0.202 29)
-
Step 700
700 (this color)
#B71E17
oklch(50.2% 0.188 28.9)
-
Step 800
800
#911A13
oklch(42.7% 0.155 29)
-
Step 900
900
#751E17
oklch(37.7% 0.122 28.8)
-
Step 950
950
#45140F
oklch(27.1% 0.077 28.9)
#B71E17 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) | #524813 | 0.203 |
| Deuteranopia (no green cones) | #77690B | 0.183 |
| Tritanopia (no blue cones) | #CA001F | 0.039 |
| Achromatopsia (no color) | #5D5D5D | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B71E17
#B71E17
oklch(50.2% 0.188 28.9)
- #00717E
#00717E
oklch(50.2% 0.086 208.7)
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 #B71E17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.012
- Rufous #AE2012 ΔE 0.019
- Scarlet #BE0119 ΔE 0.020
- Rusty Red #AF2F0D ΔE 0.025
- Rust Red #AA2704 ΔE 0.029
- Lipstick Red #C0022F ΔE 0.034
- Brown #A52A2A ΔE 0.037
- Rose Red #BE013C ΔE 0.047
Use #B71E17 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.