#AD2B1E
Closest named color: Rufous (#AE2012). oklch(49.5% 0.169 29.9), rgb(173, 43, 30).
Aa
White text reads best on this color (6.68:1).
About this color
#AD2B1E is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.169 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Rufous (#AE2012), ΔE 0.013 away. White text reads best on it, at 6.68:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.169) |
| Temperature | warm |
| Nearest name | Rufous (#AE2012) |
| Black text | 3.14:1 |
| White text | 6.68:1 |
Values
| HEX | #AD2B1E |
| RGB | rgb(173, 43, 30) |
| HSL | hsl(5, 70%, 40%) |
| OKLCH | oklch(49.5% 0.169 29.9) |
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 #AD2B1E | 6.68:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #AD2B1E | 3.14:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #AD2B1E text on white | 6.68:1 | AA | Lc 81.6 | Fine for body text |
| #AD2B1E text on black | 3.14:1 | AA large text | Lc -20.2 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#F9E4E1
oklch(93.5% 0.023 27.3)
-
Step 200
200
#F6CFC8
oklch(88.6% 0.045 29.9)
-
Step 300
300
#F1ADA2
oklch(80.9% 0.082 29.3)
-
Step 400
400
#E67F6F
oklch(70.7% 0.13 30)
-
Step 500
500
#DC5A49
oklch(63.2% 0.166 29.9)
-
Step 600
600
#C7392A
oklch(55.5% 0.181 29.9)
-
Step 700
700 (this color)
#AD2B1E
oklch(49.5% 0.169 29.9)
-
Step 800
800
#8B251A
oklch(42.6% 0.139 30)
-
Step 900
900
#70251C
oklch(37.7% 0.108 29.8)
-
Step 950
950
#421711
oklch(27% 0.068 30.2)
#AD2B1E 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) | #534A1B | 0.180 |
| Deuteranopia (no green cones) | #736617 | 0.163 |
| Tritanopia (no blue cones) | #BF0029 | 0.046 |
| Achromatopsia (no color) | #5C5C5C | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD2B1E
#AD2B1E
oklch(49.5% 0.169 29.9)
- #006E7C
#006E7C
oklch(49.3% 0.085 210.1)
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 #AD2B1E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rufous #AE2012 ΔE 0.013
- Firebrick #B22222 ΔE 0.015
- Rusty Red #AF2F0D ΔE 0.015
- Rust Red #AA2704 ΔE 0.016
- Brown #A52A2A ΔE 0.021
- Brick #A03623 ΔE 0.027
- Burnt Red #9F2305 ΔE 0.036
- Russet #A13905 ΔE 0.037
Use #AD2B1E 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.