#A34637
Closest named color: Sienna (#A0522D). oklch(51.3% 0.127 31.1), rgb(163, 70, 55).
Aa
White text reads best on this color (6.01:1).
About this color
#A34637 is a medium-dark, moderately saturated red. In OKLCH its lightness is 51%, its chroma 0.127 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.033 away. White text reads best on it, at 6.01:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.127) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.48:1 |
| White text | 6.01:1 |
Values
| HEX | #A34637 |
| RGB | rgb(163, 70, 55) |
| HSL | hsl(8, 50%, 43%) |
| OKLCH | oklch(51.3% 0.127 31.1) |
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 #A34637 | 6.01:1 | AA | Lc -84.7 | Fine for body text |
| Black text on #A34637 | 3.48:1 | AA large text | Lc 24.6 | Dividers and decoration only |
| #A34637 text on white | 6.01:1 | AA | Lc 79.5 | Fine for body text |
| #A34637 text on black | 3.48:1 | AA large text | Lc -22.3 | 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 700.
-
Step 50
50
#FBF4F2
oklch(97.2% 0.008 36.6)
-
Step 100
100
#F6E6E3
oklch(93.7% 0.018 30.3)
-
Step 200
200
#EFD1CC
oklch(88.4% 0.034 29)
-
Step 300
300
#E6B3A9
oklch(81% 0.061 31.1)
-
Step 400
400
#D7897B
oklch(70.7% 0.099 30.8)
-
Step 500
500
#CA6A59
oklch(63.2% 0.125 31.3)
-
Step 600
600
#B54F3F
oklch(55.6% 0.136 30.9)
-
Step 700
700 (this color)
#A34637
oklch(51.3% 0.127 31.1)
-
Step 800
800
#7E3529
oklch(42.7% 0.104 31.3)
-
Step 900
900
#662F25
oklch(37.7% 0.082 31.8)
-
Step 950
950
#3C1C16
oklch(27% 0.052 31.8)
#A34637 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) | #5E5635 | 0.130 |
| Deuteranopia (no green cones) | #756B35 | 0.121 |
| Tritanopia (no blue cones) | #B33443 | 0.048 |
| Achromatopsia (no color) | #636363 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A34637
#A34637
oklch(51.3% 0.127 31.1)
- #007484
#007484
oklch(51.3% 0.089 211.4)
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 #A34637, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.033
- Brick #A03623 ΔE 0.034
- Burnt Umber #A0450E ΔE 0.036
- Russet #A13905 ΔE 0.041
- Light Maroon #A24857 ΔE 0.043
- Rusty Red #AF2F0D ΔE 0.046
- Brown #A52A2A ΔE 0.049
- Dull Red #BB3F3F ΔE 0.049
Use #A34637 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.