#AC2B02
Closest named color: Rust Red (#AA2704). oklch(49.1% 0.171 35), rgb(172, 43, 2).
Aa
White text reads best on this color (6.77:1).
About this color
#AC2B02 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.171 and its hue 35°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Red (#AA2704), ΔE 0.008 away. White text reads best on it, at 6.77:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.171) |
| Temperature | warm |
| Nearest name | Rust Red (#AA2704) |
| Black text | 3.10:1 |
| White text | 6.77:1 |
Values
| HEX | #AC2B02 |
| RGB | rgb(172, 43, 2) |
| HSL | hsl(14, 98%, 34%) |
| OKLCH | oklch(49.1% 0.171 35) |
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 #AC2B02 | 6.77:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #AC2B02 | 3.10:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #AC2B02 text on white | 6.77:1 | AA | Lc 81.9 | Fine for body text |
| #AC2B02 text on black | 3.10:1 | AA large text | Lc -20.0 | 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#F9E5DF
oklch(93.6% 0.023 37.4)
-
Step 200
200
#F6CFC5
oklch(88.5% 0.046 34.7)
-
Step 300
300
#F1AE9D
oklch(81% 0.083 34.8)
-
Step 400
400
#E68066
oklch(70.6% 0.132 35.3)
-
Step 500
500
#DC5B3B
oklch(63.1% 0.169 35.1)
-
Step 600
600
#C73B13
oklch(55.6% 0.183 35.2)
-
Step 700
700 (this color)
#AC2B02
oklch(49.1% 0.171 35)
-
Step 800
800
#8C260A
oklch(42.8% 0.142 34.9)
-
Step 900
900
#702513
oklch(37.6% 0.11 34.7)
-
Step 950
950
#42170D
oklch(27% 0.07 34.5)
#AC2B02 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) | #544900 | 0.177 |
| Deuteranopia (no green cones) | #736600 | 0.160 |
| Tritanopia (no blue cones) | #BE0025 | 0.053 |
| Achromatopsia (no color) | #5B5B5B | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC2B02
#AC2B02
oklch(49.1% 0.171 35)
- #006D7F
#006D7F
oklch(49.2% 0.087 214.3)
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 #AC2B02, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Red #AA2704 ΔE 0.008
- Rusty Red #AF2F0D ΔE 0.010
- Rufous #AE2012 ΔE 0.018
- Firebrick #B22222 ΔE 0.027
- Russet #A13905 ΔE 0.028
- Brick #A03623 ΔE 0.028
- Brown #A52A2A ΔE 0.031
- Burnt Red #9F2305 ΔE 0.032
Use #AC2B02 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.