#A3421A
Closest named color: Burnt Umber (#A0450E). oklch(50.4% 0.138 40.6), rgb(163, 66, 26).
Aa
White text reads best on this color (6.26:1).
About this color
#A3421A is a medium-dark, moderately saturated brown. In OKLCH its lightness is 50%, its chroma 0.138 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Umber (#A0450E), ΔE 0.012 away. White text reads best on it, at 6.26:1.
| Hue family | Browns |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.138) |
| Temperature | warm |
| Nearest name | Burnt Umber (#A0450E) |
| Black text | 3.35:1 |
| White text | 6.26:1 |
Values
| HEX | #A3421A |
| RGB | rgb(163, 66, 26) |
| HSL | hsl(18, 72%, 37%) |
| OKLCH | oklch(50.4% 0.138 40.6) |
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 #A3421A | 6.26:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #A3421A | 3.35:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #A3421A text on white | 6.26:1 | AA | Lc 80.5 | Fine for body text |
| #A3421A text on black | 3.35:1 | AA large text | Lc -21.4 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6E0
oklch(93.6% 0.019 41.8)
-
Step 200
200
#F0D2C7
oklch(88.6% 0.037 41.2)
-
Step 300
300
#E7B3A0
oklch(80.9% 0.066 41)
-
Step 400
400
#D9896C
oklch(70.6% 0.107 40.6)
-
Step 500
500
#CD6944
oklch(63.1% 0.137 40.5)
-
Step 600
600
#B84E23
oklch(55.5% 0.148 40.7)
-
Step 700
700 (this color)
#A3421A
oklch(50.4% 0.138 40.6)
-
Step 800
800
#813415
oklch(42.7% 0.115 40.6)
-
Step 900
900
#682E18
oklch(37.7% 0.09 40.6)
-
Step 950
950
#3D1C0F
oklch(27% 0.056 41.6)
#A3421A 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) | #5E5314 | 0.134 |
| Deuteranopia (no green cones) | #756816 | 0.122 |
| Tritanopia (no blue cones) | #B42A3A | 0.066 |
| Achromatopsia (no color) | #606060 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3421A
#A3421A
oklch(50.4% 0.138 40.6)
- #007089
#007089
oklch(50.4% 0.092 220.4)
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 #A3421A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Umber #A0450E ΔE 0.012
- Russet #A13905 ΔE 0.019
- Brick #A03623 ΔE 0.029
- Sienna #A0522D ΔE 0.033
- Rusty Red #AF2F0D ΔE 0.035
- Cinnamon #AC4F06 ΔE 0.039
- Warm Brown #964E02 ΔE 0.040
- Rust Red #AA2704 ΔE 0.043
Use #A3421A 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.