#B53221
Closest named color: Rusty Red (#AF2F0D). oklch(51.6% 0.17 30.8), rgb(181, 50, 33).
Aa
White text reads best on this color (6.09:1).
About this color
#B53221 is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.170 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.019 away. White text reads best on it, at 6.09:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.170) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.44:1 |
| White text | 6.09:1 |
Values
| HEX | #B53221 |
| RGB | rgb(181, 50, 33) |
| HSL | hsl(7, 69%, 42%) |
| OKLCH | oklch(51.6% 0.17 30.8) |
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 #B53221 | 6.09:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #B53221 | 3.44:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #B53221 text on white | 6.09:1 | AA | Lc 79.2 | Fine for body text |
| #B53221 text on black | 3.44:1 | AA large text | Lc -22.6 | 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
#F9E4E0
oklch(93.5% 0.024 30.5)
-
Step 200
200
#F6CFC7
oklch(88.6% 0.046 31.6)
-
Step 300
300
#F1ADA0
oklch(80.8% 0.083 31.1)
-
Step 400
400
#E77F6D
oklch(70.7% 0.132 31)
-
Step 500
500
#DC5946
oklch(63% 0.168 30.6)
-
Step 600
600
#C83926
oklch(55.7% 0.183 30.9)
-
Step 700
700 (this color)
#B53221
oklch(51.6% 0.17 30.8)
-
Step 800
800
#8C2417
oklch(42.7% 0.142 30.7)
-
Step 900
900
#71241A
oklch(37.7% 0.111 30.3)
-
Step 950
950
#421710
oklch(27% 0.069 31.3)
#B53221 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) | #59501E | 0.181 |
| Deuteranopia (no green cones) | #7A6D1B | 0.165 |
| Tritanopia (no blue cones) | #C8002F | 0.053 |
| Achromatopsia (no color) | #626262 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B53221
#B53221
oklch(51.6% 0.17 30.8)
- #007585
#007585
oklch(51.6% 0.09 211.2)
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 #B53221, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.019
- Firebrick #B22222 ΔE 0.025
- Rufous #AE2012 ΔE 0.031
- Sinopia #BB3E03 ΔE 0.033
- Rust Red #AA2704 ΔE 0.033
- Dull Red #BB3F3F ΔE 0.036
- Scarlet #BE0119 ΔE 0.039
- Brown #A52A2A ΔE 0.040
Use #B53221 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.