#AD252E
Closest named color: Firebrick (#B22222). oklch(49.1% 0.171 23.2), rgb(173, 37, 46).
Aa
White text reads best on this color (6.81:1).
About this color
#AD252E is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.171 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Firebrick (#B22222), ΔE 0.015 away. White text reads best on it, at 6.81:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.171) |
| Temperature | warm |
| Nearest name | Firebrick (#B22222) |
| Black text | 3.08:1 |
| White text | 6.81:1 |
Values
| HEX | #AD252E |
| RGB | rgb(173, 37, 46) |
| HSL | hsl(356, 65%, 41%) |
| OKLCH | oklch(49.1% 0.171 23.2) |
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 #AD252E | 6.81:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #AD252E | 3.08:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #AD252E text on white | 6.81:1 | AA | Lc 82.0 | Fine for body text |
| #AD252E text on black | 3.08:1 | AA large text | Lc -19.8 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E2
oklch(93.6% 0.024 23.9)
-
Step 200
200
#F6CECB
oklch(88.5% 0.046 23.1)
-
Step 300
300
#F2ACA7
oklch(80.9% 0.083 23.6)
-
Step 400
400
#E87D79
oklch(70.8% 0.133 23.2)
-
Step 500
500
#DD5656
oklch(63% 0.17 23.3)
-
Step 600
600
#C9353C
oklch(55.7% 0.184 23.2)
-
Step 700
700 (this color)
#AD252E
oklch(49.1% 0.171 23.2)
-
Step 800
800
#8C2227
oklch(42.7% 0.141 23.2)
-
Step 900
900
#712324
oklch(37.8% 0.11 23.4)
-
Step 950
950
#431615
oklch(27.1% 0.07 24.2)
#AD252E 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) | #4F482D | 0.187 |
| Deuteranopia (no green cones) | #706529 | 0.171 |
| Tritanopia (no blue cones) | #BF002A | 0.038 |
| Achromatopsia (no color) | #5B5B5B | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD252E
#AD252E
oklch(49.1% 0.171 23.2)
- #006E76
#006E76
oklch(49.1% 0.084 203.6)
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 #AD252E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Firebrick #B22222 ΔE 0.015
- Brown #A52A2A ΔE 0.017
- Rufous #AE2012 ΔE 0.023
- Rouge #AB1239 ΔE 0.029
- Rust Red #AA2704 ΔE 0.033
- Rusty Red #AF2F0D ΔE 0.035
- Scarlet #BE0119 ΔE 0.037
- Brick #A03623 ΔE 0.038
Use #AD252E 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.