#AB3821
Closest named color: Rusty Red (#AF2F0D). oklch(50.5% 0.155 33.2), rgb(171, 56, 33).
Aa
White text reads best on this color (6.32:1).
About this color
#AB3821 is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.155 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.016 away. White text reads best on it, at 6.32:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.155) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.31:1 |
| White text | 6.32:1 |
Values
| HEX | #AB3821 |
| RGB | rgb(171, 56, 33) |
| HSL | hsl(10, 68%, 40%) |
| OKLCH | oklch(50.5% 0.155 33.2) |
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 #AB3821 | 6.32:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #AB3821 | 3.31:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #AB3821 text on white | 6.32:1 | AA | Lc 80.5 | Fine for body text |
| #AB3821 text on black | 3.31:1 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F8E5E1
oklch(93.6% 0.022 31.8)
-
Step 200
200
#F3D0C8
oklch(88.5% 0.041 33)
-
Step 300
300
#EDB0A2
oklch(81% 0.075 33.3)
-
Step 400
400
#E1836F
oklch(70.7% 0.12 32.9)
-
Step 500
500
#D66048
oklch(63.1% 0.154 33.1)
-
Step 600
600
#C1432A
oklch(55.6% 0.166 33.2)
-
Step 700
700 (this color)
#AB3821
oklch(50.5% 0.155 33.2)
-
Step 800
800
#872C1A
oklch(42.7% 0.128 33.1)
-
Step 900
900
#6D291B
oklch(37.7% 0.1 33.4)
-
Step 950
950
#401911
oklch(27% 0.063 33.1)
#AB3821 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) | #59501D | 0.161 |
| Deuteranopia (no green cones) | #76691C | 0.146 |
| Tritanopia (no blue cones) | #BC1434 | 0.058 |
| Achromatopsia (no color) | #606060 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AB3821
#AB3821
oklch(50.5% 0.155 33.2)
- #007183
#007183
oklch(50.4% 0.089 213.7)
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 #AB3821, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.016
- Brick #A03623 ΔE 0.024
- Rust Red #AA2704 ΔE 0.027
- Russet #A13905 ΔE 0.027
- Rufous #AE2012 ΔE 0.032
- Firebrick #B22222 ΔE 0.032
- Brown #A52A2A ΔE 0.033
- Burnt Umber #A0450E ΔE 0.037
Use #AB3821 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.