#AB3537
Closest named color: Brown (#A52A2A). oklch(50.5% 0.154 23.6), rgb(171, 53, 55).
Aa
White text reads best on this color (6.37:1).
About this color
#AB3537 is a medium-dark, vivid red. In OKLCH its lightness is 50%, its chroma 0.154 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.025 away. White text reads best on it, at 6.37:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.154) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 3.29:1 |
| White text | 6.37:1 |
Values
| HEX | #AB3537 |
| RGB | rgb(171, 53, 55) |
| HSL | hsl(359, 53%, 44%) |
| OKLCH | oklch(50.5% 0.154 23.6) |
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 #AB3537 | 6.37:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #AB3537 | 3.29:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #AB3537 text on white | 6.37:1 | AA | Lc 80.7 | Fine for body text |
| #AB3537 text on black | 3.29:1 | AA large text | Lc -21.2 | 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
#F8E5E3
oklch(93.7% 0.021 24.8)
-
Step 200
200
#F4CFCC
oklch(88.5% 0.042 23.5)
-
Step 300
300
#EDAEAA
oklch(80.8% 0.075 23)
-
Step 400
400
#E1817C
oklch(70.6% 0.119 23.7)
-
Step 500
500
#D65E5B
oklch(63.1% 0.152 23.9)
-
Step 600
600
#C14041
oklch(55.6% 0.165 23.8)
-
Step 700
700 (this color)
#AB3537
oklch(50.5% 0.154 23.6)
-
Step 800
800
#872A2B
oklch(42.7% 0.127 23.7)
-
Step 900
900
#6D2727
oklch(37.7% 0.1 23.2)
-
Step 950
950
#401817
oklch(27% 0.063 23.6)
#AB3537 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) | #554F36 | 0.167 |
| Deuteranopia (no green cones) | #736834 | 0.151 |
| Tritanopia (no blue cones) | #BC1437 | 0.044 |
| Achromatopsia (no color) | #5F5F5F | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AB3537
#AB3537
oklch(50.5% 0.154 23.6)
- #00727B
#00727B
oklch(50.3% 0.086 204.4)
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 #AB3537, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.025
- Firebrick #B22222 ΔE 0.028
- Brick #A03623 ΔE 0.032
- Rusty Red #AF2F0D ΔE 0.034
- Rufous #AE2012 ΔE 0.036
- Rust Red #AA2704 ΔE 0.040
- Dull Red #BB3F3F ΔE 0.040
- Rouge #AB1239 ΔE 0.045
Use #AB3537 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.