#64321C
Closest named color: Chestnut (#742802). oklch(37.8% 0.08 43.5), rgb(100, 50, 28).
Aa
White text reads best on this color (10.42:1).
About this color
#64321C is a dark, moderately saturated brown. In OKLCH its lightness is 38%, its chroma 0.080 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.037 away. White text reads best on it, at 10.42:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.080) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.01:1 |
| White text | 10.42:1 |
Values
| HEX | #64321C |
| RGB | rgb(100, 50, 28) |
| HSL | hsl(18, 56%, 25%) |
| OKLCH | oklch(37.8% 0.08 43.5) |
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 #64321C | 10.42:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #64321C | 2.01:1 | Fails | Lc 10.1 | Not readable |
| #64321C text on white | 10.42:1 | AAA | Lc 93.8 | Preferred for body text |
| #64321C text on black | 2.01:1 | Fails | Lc -8.7 | 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
#F5E6E1
oklch(93.5% 0.018 39.4)
-
Step 200
200
#EDD3C8
oklch(88.5% 0.033 44.3)
-
Step 300
300
#E3B5A2
oklch(80.9% 0.06 43.6)
-
Step 400
400
#D38D70
oklch(70.7% 0.095 43.3)
-
Step 500
500
#C66F49
oklch(63.2% 0.122 43.7)
-
Step 600
600
#B1552A
oklch(55.6% 0.133 43.7)
-
Step 700
700
#98451D
oklch(49.2% 0.123 43.7)
-
Step 800
800
#7B391A
oklch(42.6% 0.102 43.8)
-
Step 900
900 (this color)
#64321C
oklch(37.8% 0.08 43.5)
-
Step 950
950
#3B1E11
oklch(27.2% 0.051 44.3)
#64321C 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) | #40391A | 0.072 |
| Deuteranopia (no green cones) | #4C441B | 0.067 |
| Tritanopia (no blue cones) | #6E282D | 0.043 |
| Achromatopsia (no color) | #404040 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64321C
#64321C
oklch(37.8% 0.08 43.5)
- #00495D
#00495D
oklch(37.7% 0.071 223.8)
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 #64321C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.037
- Purple Brown #673A3F ΔE 0.049
- Mud Brown #60460F ΔE 0.061
- Reddy Brown #6E1005 ΔE 0.062
- Blood #770001 ΔE 0.075
- Red Brown #8B2E16 ΔE 0.080
- Maroon #800000 ΔE 0.080
- Rust Brown #8B3103 ΔE 0.081
Use #64321C 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.