#B33212
Closest named color: Rusty Red (#AF2F0D). oklch(51.1% 0.171 34.3), rgb(179, 50, 18).
Aa
White text reads best on this color (6.20:1).
About this color
#B33212 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.171 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.010 away. White text reads best on it, at 6.20:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.171) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.38:1 |
| White text | 6.20:1 |
Values
| HEX | #B33212 |
| RGB | rgb(179, 50, 18) |
| HSL | hsl(12, 82%, 39%) |
| OKLCH | oklch(51.1% 0.171 34.3) |
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 #B33212 | 6.20:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #B33212 | 3.38:1 | AA large text | Lc 24.4 | Dividers and decoration only |
| #B33212 text on white | 6.20:1 | AA | Lc 79.7 | Fine for body text |
| #B33212 text on black | 3.38:1 | AA large text | Lc -22.1 | 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
#F9E5DF
oklch(93.6% 0.023 37.4)
-
Step 200
200
#F6CFC5
oklch(88.5% 0.046 34.7)
-
Step 300
300
#F1AE9D
oklch(81% 0.083 34.8)
-
Step 400
400
#E68068
oklch(70.7% 0.131 34.2)
-
Step 500
500
#DC5B3D
oklch(63.2% 0.168 34.5)
-
Step 600
600
#C83A18
oklch(55.7% 0.184 34.1)
-
Step 700
700 (this color)
#B33212
oklch(51.1% 0.171 34.3)
-
Step 800
800
#8C260D
oklch(42.8% 0.141 34.3)
-
Step 900
900
#702514
oklch(37.6% 0.11 34.2)
-
Step 950
950
#42170D
oklch(27% 0.07 34.5)
#B33212 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) | #594F0A | 0.179 |
| Deuteranopia (no green cones) | #796B06 | 0.161 |
| Tritanopia (no blue cones) | #C6002D | 0.059 |
| Achromatopsia (no color) | #616161 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B33212
#B33212
oklch(51.1% 0.171 34.3)
- #007386
#007386
oklch(51.1% 0.09 214.4)
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 #B33212, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.010
- Rust Red #AA2704 ΔE 0.027
- Firebrick #B22222 ΔE 0.029
- Rufous #AE2012 ΔE 0.029
- Sinopia #BB3E03 ΔE 0.030
- Russet #A13905 ΔE 0.037
- Brick #A03623 ΔE 0.038
- Brown #A52A2A ΔE 0.041
Use #B33212 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.