#643417
Closest named color: Chestnut (#742802). oklch(38.1% 0.08 49.5), rgb(100, 52, 23).
Aa
White text reads best on this color (10.26:1).
About this color
#643417 is a dark, moderately saturated brown. In OKLCH its lightness is 38%, its chroma 0.080 and its hue 49°. 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 10.26:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.080) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 2.04:1 |
| White text | 10.26:1 |
Values
| HEX | #643417 |
| RGB | rgb(100, 52, 23) |
| HSL | hsl(23, 63%, 24%) |
| OKLCH | oklch(38.1% 0.08 49.5) |
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 #643417 | 10.26:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #643417 | 2.04:1 | Fails | Lc 10.4 | Not readable |
| #643417 text on white | 10.26:1 | AAA | Lc 93.5 | Preferred for body text |
| #643417 text on black | 2.04:1 | Fails | Lc -9.0 | 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
#F4E7E0
oklch(93.6% 0.017 50.4)
-
Step 200
200
#ECD3C6
oklch(88.4% 0.033 49.3)
-
Step 300
300
#E2B69F
oklch(81% 0.06 49)
-
Step 400
400
#D28E6A
oklch(70.7% 0.097 48.6)
-
Step 500
500
#C47140
oklch(63.1% 0.123 49.6)
-
Step 600
600
#B0571C
oklch(55.7% 0.135 49.3)
-
Step 700
700
#97470D
oklch(49.2% 0.125 49.5)
-
Step 800
800
#7A3B10
oklch(42.7% 0.102 49.9)
-
Step 900
900 (this color)
#643417
oklch(38.1% 0.08 49.5)
-
Step 950
950
#3A1E0E
oklch(26.9% 0.051 49.1)
#643417 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) | #423A14 | 0.068 |
| Deuteranopia (no green cones) | #4D4516 | 0.064 |
| Tritanopia (no blue cones) | #6E2A2E | 0.049 |
| Achromatopsia (no color) | #414141 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643417
#643417
oklch(38.1% 0.08 49.5)
- #004963
#004963
oklch(38% 0.076 230.5)
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 #643417, 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 0.053
- Mud Brown #60460F ΔE 0.053
- Reddy Brown #6E1005 ΔE 0.067
- Rust Brown #8B3103 ΔE 0.079
- Red Brown #8B2E16 ΔE 0.080
- Blood #770001 ΔE 0.080
- Maroon #800000 ΔE 0.084
Use #643417 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.