#AB3733
Closest named color: Brown (#A52A2A). oklch(50.6% 0.152 26.1), rgb(171, 55, 51).
Aa
White text reads best on this color (6.31:1).
About this color
#AB3733 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.152 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.027 away. White text reads best on it, at 6.31:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.152) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 3.32:1 |
| White text | 6.31:1 |
Values
| HEX | #AB3733 |
| RGB | rgb(171, 55, 51) |
| HSL | hsl(2, 54%, 44%) |
| OKLCH | oklch(50.6% 0.152 26.1) |
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 #AB3733 | 6.31:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #AB3733 | 3.32:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #AB3733 text on white | 6.31:1 | AA | Lc 80.4 | Fine for body text |
| #AB3733 text on black | 3.32:1 | AA large text | Lc -21.4 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E2
oklch(93.6% 0.021 28.3)
-
Step 200
200
#F3CFCB
oklch(88.4% 0.041 25.4)
-
Step 300
300
#EDAFA8
oklch(81% 0.074 26.1)
-
Step 400
400
#E18279
oklch(70.7% 0.119 26.2)
-
Step 500
500
#D55F57
oklch(63% 0.151 26.2)
-
Step 600
600
#C1413D
oklch(55.6% 0.165 25.8)
-
Step 700
700 (this color)
#AB3733
oklch(50.6% 0.152 26.1)
-
Step 800
800
#872B27
oklch(42.8% 0.127 26.4)
-
Step 900
900
#6C2824
oklch(37.6% 0.098 26.2)
-
Step 950
950
#401816
oklch(27% 0.063 25.1)
#AB3733 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) | #575032 | 0.163 |
| Deuteranopia (no green cones) | #74692F | 0.150 |
| Tritanopia (no blue cones) | #BC1737 | 0.047 |
| Achromatopsia (no color) | #606060 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AB3733
#AB3733
oklch(50.6% 0.152 26.1)
- #00737D
#00737D
oklch(50.7% 0.087 205.4)
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 #AB3733, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.027
- Brick #A03623 ΔE 0.029
- Firebrick #B22222 ΔE 0.029
- Rusty Red #AF2F0D ΔE 0.030
- Rufous #AE2012 ΔE 0.035
- Rust Red #AA2704 ΔE 0.037
- Dull Red #BB3F3F ΔE 0.039
- Russet #A13905 ΔE 0.043
Use #AB3733 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.