#B33022
Closest named color: Rusty Red (#AF2F0D). oklch(51.1% 0.17 30), rgb(179, 48, 34).
Aa
White text reads best on this color (6.24:1).
About this color
#B33022 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.170 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.016 away. White text reads best on it, at 6.24:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.170) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.36:1 |
| White text | 6.24:1 |
Values
| HEX | #B33022 |
| RGB | rgb(179, 48, 34) |
| HSL | hsl(6, 68%, 42%) |
| OKLCH | oklch(51.1% 0.17 30) |
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 #B33022 | 6.24:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #B33022 | 3.36:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #B33022 text on white | 6.24:1 | AA | Lc 79.8 | Fine for body text |
| #B33022 text on black | 3.36:1 | AA large text | Lc -22.0 | 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
#F9E4E1
oklch(93.5% 0.023 27.3)
-
Step 200
200
#F6CFC8
oklch(88.6% 0.045 29.9)
-
Step 300
300
#F1ADA1
oklch(80.9% 0.082 30.2)
-
Step 400
400
#E77F6E
oklch(70.8% 0.132 30.4)
-
Step 500
500
#DC5948
oklch(63% 0.168 29.9)
-
Step 600
600
#C83829
oklch(55.6% 0.183 29.9)
-
Step 700
700 (this color)
#B33022
oklch(51.1% 0.17 30)
-
Step 800
800
#8C2419
oklch(42.7% 0.141 30)
-
Step 900
900
#70241B
oklch(37.6% 0.109 29.8)
-
Step 950
950
#421711
oklch(27% 0.068 30.2)
#B33022 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) | #584E1F | 0.180 |
| Deuteranopia (no green cones) | #786B1C | 0.164 |
| Tritanopia (no blue cones) | #C5002E | 0.050 |
| Achromatopsia (no color) | #606060 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B33022
#B33022
oklch(51.1% 0.17 30)
- #007382
#007382
oklch(50.9% 0.088 210.5)
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 #B33022, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.016
- Firebrick #B22222 ΔE 0.020
- Rufous #AE2012 ΔE 0.026
- Rust Red #AA2704 ΔE 0.029
- Brown #A52A2A ΔE 0.034
- Brick #A03623 ΔE 0.037
- Scarlet #BE0119 ΔE 0.038
- Sinopia #BB3E03 ΔE 0.038
Use #B33022 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.