#B34421
Closest named color: Sinopia (#BB3E03). oklch(53.4% 0.152 37.3), rgb(179, 68, 33).
Aa
White text reads best on this color (5.57:1).
About this color
#B34421 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.152 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.019 away. White text reads best on it, at 5.57:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.152) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #B34421 |
| RGB | rgb(179, 68, 33) |
| HSL | hsl(14, 69%, 42%) |
| OKLCH | oklch(53.4% 0.152 37.3) |
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 #B34421 | 5.57:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #B34421 | 3.76:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #B34421 text on white | 5.57:1 | AA | Lc 77.0 | Fine for body text |
| #B34421 text on black | 3.76:1 | AA large text | Lc -24.7 | 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 600.
-
Step 50
50
#FBF3F1
oklch(97% 0.009 34.3)
-
Step 100
100
#F7E6E1
oklch(93.7% 0.02 37)
-
Step 200
200
#F1D1C8
oklch(88.5% 0.038 36.2)
-
Step 300
300
#E9B2A1
oklch(80.9% 0.069 37.9)
-
Step 400
400
#DB876F
oklch(70.6% 0.109 36.7)
-
Step 500
500
#CF6748
oklch(63.1% 0.139 37.4)
-
Step 600
600 (this color)
#B34421
oklch(53.4% 0.152 37.3)
-
Step 700
700
#A13B1B
oklch(49.1% 0.142 37.2)
-
Step 800
800
#823219
oklch(42.7% 0.117 37.5)
-
Step 900
900
#692D1B
oklch(37.7% 0.091 37.4)
-
Step 950
950
#3E1B11
oklch(27% 0.058 36.8)
#B34421 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) | #64581C | 0.152 |
| Deuteranopia (no green cones) | #7F711C | 0.139 |
| Tritanopia (no blue cones) | #C5273D | 0.065 |
| Achromatopsia (no color) | #686868 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B34421
#B34421
oklch(53.4% 0.152 37.3)
- #007A91
#007A91
oklch(53.4% 0.095 217.1)
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 #B34421, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.019
- Cinnamon #AC4F06 ΔE 0.033
- Brick Orange #C14A09 ΔE 0.035
- Rusty Red #AF2F0D ΔE 0.038
- Burnt Siena #B75203 ΔE 0.038
- Dull Red #BB3F3F ΔE 0.038
- Burnt Orange #C04E01 ΔE 0.040
- Burnt Umber #A0450E ΔE 0.041
Use #B34421 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.