#603311
Closest named color: Chestnut (#742802). oklch(37.2% 0.079 53.9), rgb(96, 51, 17).
Aa
White text reads best on this color (10.61:1).
About this color
#603311 is a dark, moderately saturated brown. In OKLCH its lightness is 37%, its chroma 0.079 and its hue 54°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.044 away. White text reads best on it, at 10.61:1.
| Hue family | Browns |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.079) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.97:1 |
| White text | 10.61:1 |
Values
| HEX | #603311 |
| RGB | rgb(96, 51, 17) |
| HSL | hsl(26, 70%, 22%) |
| OKLCH | oklch(37.2% 0.079 53.9) |
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 #603311 | 10.61:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #603311 | 1.97:1 | Fails | Lc 9.6 | Not readable |
| #603311 text on white | 10.61:1 | AAA | Lc 94.3 | Preferred for body text |
| #603311 text on black | 1.97:1 | Fails | Lc -8.3 | 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
#F4E7DF
oklch(93.6% 0.018 54)
-
Step 200
200
#EBD4C5
oklch(88.5% 0.033 55.3)
-
Step 300
300
#E0B79D
oklch(80.9% 0.059 54)
-
Step 400
400
#CF9067
oklch(70.6% 0.095 53.6)
-
Step 500
500
#C2733B
oklch(63.2% 0.122 53.7)
-
Step 600
600
#AD5A12
oklch(55.7% 0.132 54.1)
-
Step 700
700
#944900
oklch(49% 0.123 54)
-
Step 800
800
#793C09
oklch(42.7% 0.103 53.2)
-
Step 900
900 (this color)
#603311
oklch(37.2% 0.079 53.9)
-
Step 950
950
#391F0C
oklch(27% 0.05 54.8)
#603311 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) | #40380D | 0.065 |
| Deuteranopia (no green cones) | #4B4211 | 0.057 |
| Tritanopia (no blue cones) | #6A292C | 0.052 |
| Achromatopsia (no color) | #3F3F3F | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603311
#603311
oklch(37.2% 0.079 53.9)
- #004663
#004663
oklch(37.2% 0.078 234.3)
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 #603311, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.044
- Mud Brown #60460F ΔE 0.055
- Purple Brown #673A3F ΔE 0.062
- Reddy Brown #6E1005 ΔE 0.068
- Blood #770001 ΔE 0.083
- Green Brown #544E03 ΔE 0.084
- Charcoal Grey #3C4142 ΔE 0.086
- Dark Olive #373E02 ΔE 0.086
Use #603311 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.