#613F03
Closest named color: Mud Brown (#60460F). oklch(39.7% 0.083 73.9), rgb(97, 63, 3).
Aa
White text reads best on this color (9.45:1).
About this color
#613F03 is a dark, moderately saturated brown. In OKLCH its lightness is 40%, its chroma 0.083 and its hue 74°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.019 away. White text reads best on it, at 9.45:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.083) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.22:1 |
| White text | 9.45:1 |
Values
| HEX | #613F03 |
| RGB | rgb(97, 63, 3) |
| HSL | hsl(38, 94%, 20%) |
| OKLCH | oklch(39.7% 0.083 73.9) |
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 #613F03 | 9.45:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #613F03 | 2.22:1 | Fails | Lc 12.3 | Not readable |
| #613F03 text on white | 9.45:1 | AAA | Lc 91.6 | Preferred for body text |
| #613F03 text on black | 2.22:1 | Fails | Lc -10.8 | 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
#F9F5EF
oklch(97.2% 0.009 78.3)
-
Step 100
100
#F1E8DD
oklch(93.5% 0.018 73.1)
-
Step 200
200
#E7D6C1
oklch(88.4% 0.034 73.2)
-
Step 300
300
#D9BB95
oklch(80.9% 0.061 73.3)
-
Step 400
400
#C69757
oklch(70.7% 0.099 73.5)
-
Step 500
500
#B67C19
oklch(63.1% 0.126 74.1)
-
Step 600
600
#9C6700
oklch(55.7% 0.118 73.9)
-
Step 700
700
#835600
oklch(49.1% 0.104 74.1)
-
Step 800
800
#6C4600
oklch(42.7% 0.091 73.9)
-
Step 900
900 (this color)
#613F03
oklch(39.7% 0.083 73.9)
-
Step 950
950
#352204
oklch(26.9% 0.052 74.7)
#613F03 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) | #4B4100 | 0.043 |
| Deuteranopia (no green cones) | #534905 | 0.037 |
| Tritanopia (no blue cones) | #6B3635 | 0.069 |
| Achromatopsia (no color) | #464646 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613F03
#613F03
oklch(39.7% 0.083 73.9)
- #254872
#254872
oklch(39.7% 0.082 254.2)
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 #613F03, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.019
- Green Brown #544E03 ΔE 0.049
- Olive Brown #645403 ΔE 0.062
- Chestnut #742802 ΔE 0.065
- Purple Brown #673A3F ΔE 0.076
- Milk Chocolate #7F4E1E ΔE 0.076
- Dark Olive #373E02 ΔE 0.078
- Medium Brown #7F5112 ΔE 0.080
Use #613F03 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.