#A64C25
Closest named color: Sienna (#A0522D). oklch(52.5% 0.13 42.3), rgb(166, 76, 37).
Aa
White text reads best on this color (5.70:1).
About this color
#A64C25 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 52%, its chroma 0.130 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.016 away. White text reads best on it, at 5.70:1.
| Hue family | Browns |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.130) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 3.68:1 |
| White text | 5.70:1 |
Values
| HEX | #A64C25 |
| RGB | rgb(166, 76, 37) |
| HSL | hsl(18, 64%, 40%) |
| OKLCH | oklch(52.5% 0.13 42.3) |
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 #A64C25 | 5.70:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #A64C25 | 3.68:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #A64C25 text on white | 5.70:1 | AA | Lc 77.9 | Fine for body text |
| #A64C25 text on black | 3.68:1 | AA large text | Lc -23.8 | 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 600.
-
Step 50
50
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F4E6E1
oklch(93.5% 0.017 40.8)
-
Step 200
200
#EDD3C9
oklch(88.6% 0.032 42.2)
-
Step 300
300
#E2B5A3
oklch(80.9% 0.058 42.9)
-
Step 400
400
#D28D72
oklch(70.6% 0.093 42.2)
-
Step 500
500
#C56F4C
oklch(63.1% 0.12 42.4)
-
Step 600
600 (this color)
#A64C25
oklch(52.5% 0.13 42.3)
-
Step 700
700
#974521
oklch(49% 0.121 42.5)
-
Step 800
800
#7B391E
oklch(42.7% 0.1 41.8)
-
Step 900
900
#63321E
oklch(37.7% 0.077 42.3)
-
Step 950
950
#3A1E12
oklch(27% 0.049 43.5)
#A64C25 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) | #655A20 | 0.123 |
| Deuteranopia (no green cones) | #7B6E23 | 0.112 |
| Tritanopia (no blue cones) | #B63844 | 0.066 |
| Achromatopsia (no color) | #666666 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A64C25
#A64C25
oklch(52.5% 0.13 42.3)
- #007692
#007692
oklch(52.4% 0.097 221.9)
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 #A64C25, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.016
- Cinnamon #AC4F06 ΔE 0.023
- Burnt Umber #A0450E ΔE 0.024
- Warm Brown #964E02 ΔE 0.040
- Russet #A13905 ΔE 0.042
- Burnt Siena #B75203 ΔE 0.042
- Sinopia #BB3E03 ΔE 0.043
- Sepia #985E2B ΔE 0.046
Use #A64C25 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.