#642403
Closest named color: Reddy Brown (#6E1005). oklch(35.2% 0.101 42.9), rgb(100, 36, 3).
Aa
White text reads best on this color (11.69:1).
About this color
#642403 is a dark, moderately saturated brown. In OKLCH its lightness is 35%, its chroma 0.101 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.037 away. White text reads best on it, at 11.69:1.
| Hue family | Browns |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.101) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.79:1 |
| White text | 11.69:1 |
Values
| HEX | #642403 |
| RGB | rgb(100, 36, 3) |
| HSL | hsl(20, 94%, 20%) |
| OKLCH | oklch(35.2% 0.101 42.9) |
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 #642403 | 11.69:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #642403 | 1.79:1 | Fails | Lc 7.7 | Not readable |
| #642403 text on white | 11.69:1 | AAA | Lc 96.1 | Preferred for body text |
| #642403 text on black | 1.79:1 | Fails | Lc 0.0 | 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
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F7E6DE
oklch(93.6% 0.022 47)
-
Step 200
200
#F2D1C3
oklch(88.5% 0.042 44.3)
-
Step 300
300
#ECB19A
oklch(80.9% 0.076 42.3)
-
Step 400
400
#DF8661
oklch(70.7% 0.121 43)
-
Step 500
500
#D46431
oklch(63.1% 0.155 43.1)
-
Step 600
600
#BE4900
oklch(55.6% 0.165 43.1)
-
Step 700
700
#A13C00
oklch(49.1% 0.146 42.8)
-
Step 800
800
#853000
oklch(42.7% 0.127 42.7)
-
Step 900
900 (this color)
#642403
oklch(35.2% 0.101 42.9)
-
Step 950
950
#3F1A0A
oklch(26.9% 0.063 42.6)
#642403 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) | #372F00 | 0.096 |
| Deuteranopia (no green cones) | #463E00 | 0.089 |
| Tritanopia (no blue cones) | #6F131E | 0.050 |
| Achromatopsia (no color) | #383838 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #642403
#642403
oklch(35.2% 0.101 42.9)
- #004254
#004254
oklch(35.2% 0.066 223.3)
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 #642403, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.037
- Chestnut #742802 ΔE 0.037
- Blood #770001 ΔE 0.055
- Claret #680018 ΔE 0.062
- Maroon #800000 ΔE 0.066
- Wine Red #7B0323 ΔE 0.074
- Purple Brown #673A3F ΔE 0.077
- Burgundy #610023 ΔE 0.078
Use #642403 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.