#AD363D
Closest named color: Brown (#A52A2A). oklch(51% 0.154 21.3), rgb(173, 54, 61).
Aa
White text reads best on this color (6.22:1).
About this color
#AD363D is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.154 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Brown (#A52A2A), ΔE 0.032 away. White text reads best on it, at 6.22:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.154) |
| Temperature | warm |
| Nearest name | Brown (#A52A2A) |
| Black text | 3.37:1 |
| White text | 6.22:1 |
Values
| HEX | #AD363D |
| RGB | rgb(173, 54, 61) |
| HSL | hsl(356, 52%, 45%) |
| OKLCH | oklch(51% 0.154 21.3) |
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 #AD363D | 6.22:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #AD363D | 3.37:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #AD363D text on white | 6.22:1 | AA | Lc 80.0 | Fine for body text |
| #AD363D text on black | 3.37:1 | AA large text | Lc -21.8 | 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E3
oklch(93.7% 0.021 24.8)
-
Step 200
200
#F4CFCD
oklch(88.5% 0.042 21.6)
-
Step 300
300
#EDAEAC
oklch(80.9% 0.074 20.9)
-
Step 400
400
#E18180
oklch(70.7% 0.119 21.1)
-
Step 500
500
#D65D60
oklch(63.1% 0.153 21)
-
Step 600
600
#C13F46
oklch(55.5% 0.166 21.4)
-
Step 700
700 (this color)
#AD363D
oklch(51% 0.154 21.3)
-
Step 800
800
#87292E
oklch(42.6% 0.128 21.5)
-
Step 900
900
#6D2729
oklch(37.7% 0.1 21.6)
-
Step 950
950
#401818
oklch(27% 0.063 22.2)
#AD363D 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) | #56513C | 0.168 |
| Deuteranopia (no green cones) | #746A3A | 0.154 |
| Tritanopia (no blue cones) | #BE173A | 0.043 |
| Achromatopsia (no color) | #616161 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD363D
#AD363D
oklch(51% 0.154 21.3)
- #00757B
#00757B
oklch(51.2% 0.087 201.1)
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 #AD363D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brown #A52A2A ΔE 0.032
- Firebrick #B22222 ΔE 0.033
- Dull Red #BB3F3F ΔE 0.035
- Brick #A03623 ΔE 0.040
- Light Burgundy #A8415B ΔE 0.041
- Rusty Red #AF2F0D ΔE 0.041
- Rufous #AE2012 ΔE 0.043
- Light Maroon #A24857 ΔE 0.043
Use #AD363D 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.