#A8210E
Closest named color: Rust Red (#AA2704). oklch(47.6% 0.173 31.2), rgb(168, 33, 14).
Aa
White text reads best on this color (7.26:1).
About this color
#A8210E is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.173 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Rust Red (#AA2704), ΔE 0.012 away. White text reads best on it, at 7.26:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.173) |
| Temperature | warm |
| Nearest name | Rust Red (#AA2704) |
| Black text | 2.88:1 |
| White text | 7.26:1 |
Values
| HEX | #A8210E |
| RGB | rgb(168, 33, 14) |
| HSL | hsl(7, 85%, 36%) |
| OKLCH | oklch(47.6% 0.173 31.2) |
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 #A8210E | 7.26:1 | AAA | Lc -88.6 | Fine for body text |
| Black text on #A8210E | 2.88:1 | Fails | Lc 20.4 | Dividers and decoration only |
| #A8210E text on white | 7.26:1 | AAA | Lc 83.6 | Fine for body text |
| #A8210E text on black | 2.88:1 | Fails | Lc -18.3 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FAE4E0
oklch(93.6% 0.025 29.9)
-
Step 200
200
#F6CFC7
oklch(88.6% 0.046 31.6)
-
Step 300
300
#F2ADA0
oklch(80.9% 0.084 30.9)
-
Step 400
400
#E87E6C
oklch(70.7% 0.134 30.8)
-
Step 500
500
#DE5843
oklch(63.1% 0.172 31.2)
-
Step 600
600
#C93722
oklch(55.6% 0.186 31.3)
-
Step 700
700 (this color)
#A8210E
oklch(47.6% 0.173 31.2)
-
Step 800
800
#8D2315
oklch(42.7% 0.144 31)
-
Step 900
900
#712418
oklch(37.7% 0.111 31.5)
-
Step 950
950
#43160F
oklch(27% 0.072 31.1)
#A8210E 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) | #4D4408 | 0.186 |
| Deuteranopia (no green cones) | #6E6101 | 0.167 |
| Tritanopia (no blue cones) | #BA001F | 0.042 |
| Achromatopsia (no color) | #575757 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A8210E
#A8210E
oklch(47.6% 0.173 31.2)
- #006877
#006877
oklch(47.5% 0.083 211.9)
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 #A8210E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rust Red #AA2704 ΔE 0.012
- Rufous #AE2012 ΔE 0.013
- Burnt Red #9F2305 ΔE 0.019
- Brown #A52A2A ΔE 0.022
- Firebrick #B22222 ΔE 0.026
- Rusty Red #AF2F0D ΔE 0.027
- Brick #A03623 ΔE 0.030
- Auburn #9B2226 ΔE 0.033
Use #A8210E 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.