#64331E
Closest named color: Chestnut (#742802). oklch(38% 0.078 43.1), rgb(100, 51, 30).
Aa
White text reads best on this color (10.32:1).
About this color
#64331E is a dark, moderately saturated brown. In OKLCH its lightness is 38%, its chroma 0.078 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.038 away. White text reads best on it, at 10.32:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.078) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.03:1 |
| White text | 10.32:1 |
Values
| HEX | #64331E |
| RGB | rgb(100, 51, 30) |
| HSL | hsl(18, 54%, 25%) |
| OKLCH | oklch(38% 0.078 43.1) |
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 #64331E | 10.32:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #64331E | 2.03:1 | Fails | Lc 10.3 | Not readable |
| #64331E text on white | 10.32:1 | AAA | Lc 93.6 | Preferred for body text |
| #64331E text on black | 2.03:1 | Fails | Lc -8.9 | Not readable |
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 900.
-
Step 50
50
#FAF4F1
oklch(97.1% 0.008 48.7)
-
Step 100
100
#F4E7E1
oklch(93.7% 0.016 46.6)
-
Step 200
200
#EDD3C8
oklch(88.5% 0.033 44.3)
-
Step 300
300
#E2B5A3
oklch(80.9% 0.058 42.9)
-
Step 400
400
#D28D71
oklch(70.6% 0.093 42.9)
-
Step 500
500
#C56F4B
oklch(63.1% 0.12 42.9)
-
Step 600
600
#B0562E
oklch(55.7% 0.129 43.1)
-
Step 700
700
#974520
oklch(49% 0.121 42.9)
-
Step 800
800
#7B3A1D
oklch(42.8% 0.1 43.2)
-
Step 900
900 (this color)
#64331E
oklch(38% 0.078 43.1)
-
Step 950
950
#3A1E12
oklch(27% 0.049 43.5)
#64331E 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) | #403A1C | 0.072 |
| Deuteranopia (no green cones) | #4C441D | 0.065 |
| Tritanopia (no blue cones) | #6E2A2E | 0.041 |
| Achromatopsia (no color) | #404040 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64331E
#64331E
oklch(38% 0.078 43.1)
- #004A5E
#004A5E
oklch(38% 0.071 223.6)
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 #64331E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.038
- Purple Brown #673A3F ΔE 0.046
- Mud Brown #60460F ΔE 0.060
- Reddy Brown #6E1005 ΔE 0.064
- Blood #770001 ΔE 0.077
- Red Brown #8B2E16 ΔE 0.079
- Rust Brown #8B3103 ΔE 0.080
- Maroon #800000 ΔE 0.081
Use #64331E 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.