#613F09
Closest named color: Mud Brown (#60460F). oklch(39.8% 0.08 72.4), rgb(97, 63, 9).
Aa
White text reads best on this color (9.44:1).
About this color
#613F09 is a dark, moderately saturated brown. In OKLCH its lightness is 40%, its chroma 0.080 and its hue 72°. 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 9.44:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.080) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.22:1 |
| White text | 9.44:1 |
Values
| HEX | #613F09 |
| RGB | rgb(97, 63, 9) |
| HSL | hsl(37, 83%, 21%) |
| OKLCH | oklch(39.8% 0.08 72.4) |
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 #613F09 | 9.44:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #613F09 | 2.22:1 | Fails | Lc 12.3 | Not readable |
| #613F09 text on white | 9.44:1 | AAA | Lc 91.6 | Preferred for body text |
| #613F09 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
#F9F5F0
oklch(97.2% 0.008 73.7)
-
Step 100
100
#F1E8DE
oklch(93.5% 0.017 70.5)
-
Step 200
200
#E7D6C2
oklch(88.5% 0.033 71.9)
-
Step 300
300
#D9BB96
oklch(80.9% 0.06 72.6)
-
Step 400
400
#C5975B
oklch(70.7% 0.095 72.6)
-
Step 500
500
#B67C23
oklch(63.1% 0.122 72.6)
-
Step 600
600
#9D6600
oklch(55.6% 0.119 72.5)
-
Step 700
700
#845500
oklch(49% 0.105 72.4)
-
Step 800
800
#6D4500
oklch(42.6% 0.091 72)
-
Step 900
900 (this color)
#613F09
oklch(39.8% 0.08 72.4)
-
Step 950
950
#352206
oklch(27% 0.05 73.1)
#613F09 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 | 0.044 |
| Deuteranopia (no green cones) | #53490B | 0.037 |
| Tritanopia (no blue cones) | #6B3635 | 0.066 |
| Achromatopsia (no color) | #464646 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613F09
#613F09
oklch(39.8% 0.08 72.4)
- #244971
#244971
oklch(39.8% 0.08 252.1)
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 #613F09, 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 0.050
- Olive Brown #645403 ΔE 0.063
- Chestnut #742802 ΔE 0.063
- Purple Brown #673A3F ΔE 0.073
- Milk Chocolate #7F4E1E ΔE 0.076
- Dark Olive #373E02 ΔE 0.079
- Medium Brown #7F5112 ΔE 0.080
Use #613F09 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.