#AA402E
Closest named color: Rusty Red (#AF2F0D). oklch(51.5% 0.143 31.9), rgb(170, 64, 46).
Aa
White text reads best on this color (6.03:1).
About this color
#AA402E is a medium-dark, vivid red. In OKLCH its lightness is 51%, its chroma 0.143 and its hue 32°. 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 6.03:1.
| Hue family | Reds |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.143) |
| Temperature | warm |
| Nearest name | Rusty Red (#AF2F0D) |
| Black text | 3.48:1 |
| White text | 6.03:1 |
Values
| HEX | #AA402E |
| RGB | rgb(170, 64, 46) |
| HSL | hsl(9, 57%, 42%) |
| OKLCH | oklch(51.5% 0.143 31.9) |
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 #AA402E | 6.03:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #AA402E | 3.48:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #AA402E text on white | 6.03:1 | AA | Lc 79.3 | Fine for body text |
| #AA402E text on black | 3.48:1 | AA large text | Lc -22.5 | 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 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
#F2D0CA
oklch(88.5% 0.039 29.7)
-
Step 300
300
#EAB1A5
oklch(81% 0.069 32.1)
-
Step 400
400
#DD8675
oklch(70.8% 0.111 31.8)
-
Step 500
500
#D16451
oklch(63.1% 0.142 31.5)
-
Step 600
600
#BC4834
oklch(55.5% 0.154 32)
-
Step 700
700 (this color)
#AA402E
oklch(51.5% 0.143 31.9)
-
Step 800
800
#843022
oklch(42.8% 0.119 31.7)
-
Step 900
900
#6A2B20
oklch(37.6% 0.093 31.8)
-
Step 950
950
#3E1A13
oklch(26.9% 0.058 32.4)
#AA402E 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) | #5D542C | 0.148 |
| Deuteranopia (no green cones) | #776B2B | 0.135 |
| Tritanopia (no blue cones) | #BB273C | 0.053 |
| Achromatopsia (no color) | #636363 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AA402E
#AA402E
oklch(51.5% 0.143 31.9)
- #007585
#007585
oklch(51.6% 0.09 211.2)
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 #AA402E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rusty Red #AF2F0D ΔE 0.031
- Brick #A03623 ΔE 0.031
- Russet #A13905 ΔE 0.036
- Burnt Umber #A0450E ΔE 0.036
- Dull Red #BB3F3F ΔE 0.039
- Sinopia #BB3E03 ΔE 0.041
- Sienna #A0522D ΔE 0.042
- Brown #A52A2A ΔE 0.042
Use #AA402E 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.