#AD423A
Closest named color: Dull Red (#BB3F3F). oklch(52.4% 0.142 27.3), rgb(173, 66, 58).
Aa
White text reads best on this color (5.80:1).
About this color
#AD423A is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.142 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Dull Red (#BB3F3F), ΔE 0.028 away. White text reads best on it, at 5.80:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.142) |
| Temperature | warm |
| Nearest name | Dull Red (#BB3F3F) |
| Black text | 3.61:1 |
| White text | 5.80:1 |
Values
| HEX | #AD423A |
| RGB | rgb(173, 66, 58) |
| HSL | hsl(4, 50%, 45%) |
| OKLCH | oklch(52.4% 0.142 27.3) |
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 #AD423A | 5.80:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #AD423A | 3.61:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #AD423A text on white | 5.80:1 | AA | Lc 78.3 | Fine for body text |
| #AD423A text on black | 3.61:1 | AA large text | Lc -23.5 | 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 600.
-
Step 50
50
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F6E6E3
oklch(93.7% 0.018 30.3)
-
Step 200
200
#F0D1CC
oklch(88.5% 0.036 28.7)
-
Step 300
300
#E7B2AA
oklch(81% 0.063 28.4)
-
Step 400
400
#D9877D
oklch(70.6% 0.103 27.4)
-
Step 500
500
#CC675D
oklch(63% 0.13 27.2)
-
Step 600
600 (this color)
#AD423A
oklch(52.4% 0.142 27.3)
-
Step 700
700
#9E3C35
oklch(49.1% 0.132 27.1)
-
Step 800
800
#80322C
oklch(42.6% 0.11 27.1)
-
Step 900
900
#672D28
oklch(37.6% 0.085 26.9)
-
Step 950
950
#3D1B18
oklch(27% 0.054 26.5)
#AD423A 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) | #5E5739 | 0.150 |
| Deuteranopia (no green cones) | #796E37 | 0.138 |
| Tritanopia (no blue cones) | #BE2B41 | 0.048 |
| Achromatopsia (no color) | #656565 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD423A
#AD423A
oklch(52.4% 0.142 27.3)
- #007885
#007885
oklch(52.4% 0.09 208)
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 #AD423A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Red #BB3F3F ΔE 0.028
- Dusty Red #B9484E ΔE 0.036
- Rusty Red #AF2F0D ΔE 0.041
- Light Maroon #A24857 ΔE 0.042
- Brick #A03623 ΔE 0.042
- Sinopia #BB3E03 ΔE 0.045
- Firebrick #B22222 ΔE 0.047
- Sienna #A0522D ΔE 0.047
Use #AD423A 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.