#AD402F
Closest named color: Rusty Red (#AF2F0D). oklch(52% 0.146 31.3), rgb(173, 64, 47).
Aa
White text reads best on this color (5.91:1).
About this color
#AD402F is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.146 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Rusty Red (#AF2F0D), ΔE 0.031 away. White text reads best on it, at 5.91:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.146) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.55:1 |
| White text | 5.91:1 |
Values
| HEX | #AD402F |
| RGB | rgb(173, 64, 47) |
| HSL | hsl(8, 57%, 43%) |
| OKLCH | oklch(52% 0.146 31.3) |
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 #AD402F | 5.91:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #AD402F | 3.55:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #AD402F text on white | 5.91:1 | AA | Lc 78.7 | Fine for body text |
| #AD402F text on black | 3.55:1 | AA large text | Lc -23.1 | 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
#F7E5E2
oklch(93.5% 0.02 28.9)
-
Step 200
200
#F2D0C9
oklch(88.4% 0.04 31.6)
-
Step 300
300
#EBB0A5
oklch(80.9% 0.071 30.7)
-
Step 400
400
#DE8574
oklch(70.7% 0.113 31.6)
-
Step 500
500
#D26350
oklch(63.1% 0.144 31.4)
-
Step 600
600
#BE4634
oklch(55.6% 0.158 31.1)
-
Step 700
700 (this color)
#AD402F
oklch(52% 0.146 31.3)
-
Step 800
800
#852F21
oklch(42.8% 0.121 31.6)
-
Step 900
900
#6B2B20
oklch(37.8% 0.094 31.7)
-
Step 950
950
#3F1A13
oklch(27.1% 0.06 32.2)
#AD402F 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) | #5E552D | 0.151 |
| Deuteranopia (no green cones) | #796D2C | 0.139 |
| Tritanopia (no blue cones) | #BE263D | 0.053 |
| Achromatopsia (no color) | #646464 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AD402F
#AD402F
oklch(52% 0.146 31.3)
- #007687
#007687
oklch(51.9% 0.091 212.1)
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 #AD402F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.031
- Dull Red #BB3F3F ΔE 0.034
- Brick #A03623 ΔE 0.036
- Sinopia #BB3E03 ΔE 0.037
- Burnt Umber #A0450E ΔE 0.040
- Russet #A13905 ΔE 0.040
- Firebrick #B22222 ΔE 0.043
- Sienna #A0522D ΔE 0.044
Use #AD402F 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.