#A64A27
Closest named color: Sienna (#A0522D). oklch(52.2% 0.131 40.3), rgb(166, 74, 39).
Aa
White text reads best on this color (5.78:1).
About this color
#A64A27 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 52%, its chroma 0.131 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.019 away. White text reads best on it, at 5.78:1.
| Hue family | Browns |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.131) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.63:1 |
| White text | 5.78:1 |
Values
| HEX | #A64A27 |
| RGB | rgb(166, 74, 39) |
| HSL | hsl(17, 62%, 40%) |
| OKLCH | oklch(52.2% 0.131 40.3) |
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 #A64A27 | 5.78:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #A64A27 | 3.63:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #A64A27 text on white | 5.78:1 | AA | Lc 78.3 | Fine for body text |
| #A64A27 text on black | 3.63:1 | AA large text | Lc -23.5 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F5E6E1
oklch(93.5% 0.018 39.4)
-
Step 200
200
#EFD2C8
oklch(88.5% 0.035 40)
-
Step 300
300
#E5B4A2
oklch(80.9% 0.063 41.1)
-
Step 400
400
#D78B6F
oklch(70.8% 0.102 41)
-
Step 500
500
#CA6B49
oklch(63.1% 0.13 40.1)
-
Step 600
600
#B5512A
oklch(55.6% 0.14 40.6)
-
Step 700
700 (this color)
#A64A27
oklch(52.2% 0.131 40.3)
-
Step 800
800
#7F361A
oklch(42.8% 0.109 40.4)
-
Step 900
900
#66301C
oklch(37.7% 0.084 40.5)
-
Step 950
950
#3C1C11
oklch(26.9% 0.054 39.5)
#A64A27 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) | #635923 | 0.127 |
| Deuteranopia (no green cones) | #7A6D25 | 0.115 |
| Tritanopia (no blue cones) | #B63643 | 0.063 |
| Achromatopsia (no color) | #666666 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A64A27
#A64A27
oklch(52.2% 0.131 40.3)
- #00768F
#00768F
oklch(52.3% 0.095 219.4)
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 #A64A27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.019
- Burnt Umber #A0450E ΔE 0.023
- Cinnamon #AC4F06 ΔE 0.028
- Russet #A13905 ΔE 0.038
- Warm Brown #964E02 ΔE 0.042
- Sinopia #BB3E03 ΔE 0.043
- Brick #A03623 ΔE 0.044
- Burnt Siena #B75203 ΔE 0.045
Use #A64A27 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.