#B53617
Closest named color: Rusty Red (#AF2F0D). oklch(51.9% 0.169 34.4), rgb(181, 54, 23).
Aa
White text reads best on this color (5.99:1).
About this color
#B53617 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.169 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.018 away. White text reads best on it, at 5.99:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.169) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.50:1 |
| White text | 5.99:1 |
Values
| HEX | #B53617 |
| RGB | rgb(181, 54, 23) |
| HSL | hsl(12, 77%, 40%) |
| OKLCH | oklch(51.9% 0.169 34.4) |
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 #B53617 | 5.99:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #B53617 | 3.50:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #B53617 text on white | 5.99:1 | AA | Lc 78.8 | Fine for body text |
| #B53617 text on black | 3.50:1 | AA large text | Lc -23.0 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E5E0
oklch(93.7% 0.023 34.3)
-
Step 200
200
#F5CFC6
oklch(88.4% 0.045 33.5)
-
Step 300
300
#F0AE9E
oklch(80.9% 0.081 34.1)
-
Step 400
400
#E68068
oklch(70.7% 0.131 34.2)
-
Step 500
500
#DB5B3E
oklch(63% 0.167 34.2)
-
Step 600
600
#C73C19
oklch(55.7% 0.181 34.6)
-
Step 700
700 (this color)
#B53617
oklch(51.9% 0.169 34.4)
-
Step 800
800
#8B270E
oklch(42.7% 0.139 34.5)
-
Step 900
900
#702615
oklch(37.8% 0.109 34.3)
-
Step 950
950
#42170D
oklch(27% 0.07 34.5)
#B53617 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) | #5C5111 | 0.175 |
| Deuteranopia (no green cones) | #7B6E0E | 0.160 |
| Tritanopia (no blue cones) | #C80031 | 0.063 |
| Achromatopsia (no color) | #636363 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B53617
#B53617
oklch(51.9% 0.169 34.4)
- #007689
#007689
oklch(52% 0.091 214)
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 #B53617, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.018
- Sinopia #BB3E03 ΔE 0.023
- Firebrick #B22222 ΔE 0.034
- Rust Red #AA2704 ΔE 0.036
- Rufous #AE2012 ΔE 0.037
- Dull Red #BB3F3F ΔE 0.039
- Russet #A13905 ΔE 0.042
- Brick #A03623 ΔE 0.043
Use #B53617 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.