#603818
Closest named color: Mud Brown (#60460F). oklch(38.3% 0.073 56.7), rgb(96, 56, 24).
Aa
White text reads best on this color (10.11:1).
About this color
#603818 is a dark, moderately saturated brown. In OKLCH its lightness is 38%, its chroma 0.073 and its hue 57°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.044 away. White text reads best on it, at 10.11:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.073) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.07:1 |
| White text | 10.11:1 |
Values
| HEX | #603818 |
| RGB | rgb(96, 56, 24) |
| HSL | hsl(27, 60%, 24%) |
| OKLCH | oklch(38.3% 0.073 56.7) |
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 #603818 | 10.11:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #603818 | 2.07:1 | Fails | Lc 10.7 | Not readable |
| #603818 text on white | 10.11:1 | AAA | Lc 93.2 | Preferred for body text |
| #603818 text on black | 2.07:1 | Fails | Lc -9.2 | 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
#F9F4F1
oklch(97% 0.007 53.4)
-
Step 100
100
#F3E7E0
oklch(93.6% 0.016 52.6)
-
Step 200
200
#E9D5C6
oklch(88.5% 0.03 59.3)
-
Step 300
300
#DDB89F
oklch(80.9% 0.055 55.9)
-
Step 400
400
#CB936A
oklch(70.8% 0.088 57)
-
Step 500
500
#BC7741
oklch(63.2% 0.111 56.9)
-
Step 600
600
#A75E1D
oklch(55.6% 0.121 57)
-
Step 700
700
#8F4D0E
oklch(49% 0.112 56.9)
-
Step 800
800
#744011
oklch(42.7% 0.093 57.4)
-
Step 900
900 (this color)
#603818
oklch(38.3% 0.073 56.7)
-
Step 950
950
#37200E
oklch(26.9% 0.046 57.2)
#603818 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) | #443C15 | 0.055 |
| Deuteranopia (no green cones) | #4D4518 | 0.051 |
| Tritanopia (no blue cones) | #692F31 | 0.051 |
| Achromatopsia (no color) | #424242 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603818
#603818
oklch(38.3% 0.073 56.7)
- #134865
#134865
oklch(38.2% 0.073 237.6)
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 #603818, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.044
- Chestnut #742802 ΔE 0.049
- Purple Brown #673A3F ΔE 0.056
- Green Brown #544E03 ΔE 0.074
- Reddy Brown #6E1005 ΔE 0.079
- Charcoal Grey #3C4142 ΔE 0.080
- Dark Olive #373E02 ΔE 0.084
- Rust Brown #8B3103 ΔE 0.086
Use #603818 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.