#B34729
Closest named color: Sinopia (#BB3E03). oklch(53.8% 0.148 36.2), rgb(179, 71, 41).
Aa
White text reads best on this color (5.45:1).
About this color
#B34729 is a medium-dark, vivid red. In OKLCH its lightness is 54%, its chroma 0.148 and its hue 36°. Its hue sits on the warm side of the wheel. The nearest named color is Sinopia (#BB3E03), ΔE 0.024 away. White text reads best on it, at 5.45:1.
| Hue family | Reds |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.148) |
| Temperature | warm |
| Nearest name | Sinopia (#BB3E03) |
| Black text | 3.85:1 |
| White text | 5.45:1 |
Values
| HEX | #B34729 |
| RGB | rgb(179, 71, 41) |
| HSL | hsl(13, 63%, 43%) |
| OKLCH | oklch(53.8% 0.148 36.2) |
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 #B34729 | 5.45:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #B34729 | 3.85:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #B34729 text on white | 5.45:1 | AA | Lc 76.4 | Fine for body text |
| #B34729 text on black | 3.85:1 | AA large text | Lc -25.3 | 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
#F6E6E1
oklch(93.6% 0.019 38.1)
-
Step 200
200
#F0D1C9
oklch(88.4% 0.037 34.8)
-
Step 300
300
#E8B2A3
oklch(80.9% 0.067 36.1)
-
Step 400
400
#DA8871
oklch(70.7% 0.107 36.4)
-
Step 500
500
#CE684C
oklch(63.2% 0.136 36.3)
-
Step 600
600 (this color)
#B34729
oklch(53.8% 0.148 36.2)
-
Step 700
700
#9F3D21
oklch(49.1% 0.137 36.5)
-
Step 800
800
#81331D
oklch(42.7% 0.113 36.5)
-
Step 900
900
#682E1E
oklch(37.8% 0.088 36.4)
-
Step 950
950
#3D1B12
oklch(26.9% 0.056 35.8)
#B34729 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) | #655A25 | 0.148 |
| Deuteranopia (no green cones) | #807225 | 0.135 |
| Tritanopia (no blue cones) | #C52D41 | 0.063 |
| Achromatopsia (no color) | #696969 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B34729
#B34729
oklch(53.8% 0.148 36.2)
- #007B92
#007B92
oklch(53.7% 0.096 216.9)
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 #B34729, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sinopia #BB3E03 ΔE 0.024
- Cinnamon #AC4F06 ΔE 0.033
- Brick Orange #C14A09 ΔE 0.034
- Dull Red #BB3F3F ΔE 0.035
- Burnt Siena #B75203 ΔE 0.037
- Burnt Orange #C04E01 ΔE 0.039
- Sienna #A0522D ΔE 0.039
- Rusty Red #AF2F0D ΔE 0.044
Use #B34729 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.