#A64A18
Closest named color: Burnt Umber (#A0450E). oklch(52.1% 0.135 45), rgb(166, 74, 24).
Aa
White text reads best on this color (5.81:1).
About this color
#A64A18 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 52%, its chroma 0.135 and its hue 45°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Umber (#A0450E), ΔE 0.018 away. White text reads best on it, at 5.81:1.
| Hue family | Browns |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.135) |
| Temperature | warm |
| Nearest name | Burnt Umber (#A0450E) |
| Black text | 3.61:1 |
| White text | 5.81:1 |
Values
| HEX | #A64A18 |
| RGB | rgb(166, 74, 24) |
| HSL | hsl(21, 75%, 37%) |
| OKLCH | oklch(52.1% 0.135 45) |
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 #A64A18 | 5.81:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #A64A18 | 3.61:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #A64A18 text on white | 5.81:1 | AA | Lc 78.4 | Fine for body text |
| #A64A18 text on black | 3.61:1 | AA large text | Lc -23.4 | 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
#F5E6E0
oklch(93.5% 0.018 43.2)
-
Step 200
200
#EFD2C6
oklch(88.5% 0.037 43.8)
-
Step 300
300
#E6B49E
oklch(80.9% 0.066 44.9)
-
Step 400
400
#D78B69
oklch(70.7% 0.105 44.7)
-
Step 500
500
#CA6C3F
oklch(63.1% 0.133 45)
-
Step 600
600
#B6511A
oklch(55.6% 0.146 44.8)
-
Step 700
700 (this color)
#A64A18
oklch(52.1% 0.135 45)
-
Step 800
800
#7F360E
oklch(42.7% 0.113 44.8)
-
Step 900
900
#663015
oklch(37.7% 0.087 45.1)
-
Step 950
950
#3C1D0E
oklch(27.1% 0.055 45.4)
#A64A18 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) | #64580F | 0.126 |
| Deuteranopia (no green cones) | #7B6D15 | 0.114 |
| Tritanopia (no blue cones) | #B73540 | 0.071 |
| Achromatopsia (no color) | #656565 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A64A18
#A64A18
oklch(52.1% 0.135 45)
- #007494
#007494
oklch(52% 0.099 225.5)
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 #A64A18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Umber #A0450E ΔE 0.018
- Cinnamon #AC4F06 ΔE 0.020
- Sienna #A0522D ΔE 0.021
- Warm Brown #964E02 ΔE 0.035
- Russet #A13905 ΔE 0.037
- Burnt Siena #B75203 ΔE 0.041
- Sinopia #BB3E03 ΔE 0.042
- Sepia #985E2B ΔE 0.048
Use #A64A18 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.