#63390D
Closest named color: Mud Brown (#60460F). oklch(38.8% 0.081 61.5), rgb(99, 57, 13).
Aa
White text reads best on this color (9.89:1).
About this color
#63390D is a dark, moderately saturated brown. In OKLCH its lightness is 39%, its chroma 0.081 and its hue 61°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.037 away. White text reads best on it, at 9.89:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.081) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.12:1 |
| White text | 9.89:1 |
Values
| HEX | #63390D |
| RGB | rgb(99, 57, 13) |
| HSL | hsl(31, 77%, 22%) |
| OKLCH | oklch(38.8% 0.081 61.5) |
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 #63390D | 9.89:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #63390D | 2.12:1 | Fails | Lc 11.3 | Not readable |
| #63390D text on white | 9.89:1 | AAA | Lc 92.7 | Preferred for body text |
| #63390D text on black | 2.12:1 | Fails | Lc -9.8 | 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
#FAF4F0
oklch(97.1% 0.008 56.3)
-
Step 100
100
#F3E7DE
oklch(93.5% 0.018 59.5)
-
Step 200
200
#EAD5C3
oklch(88.5% 0.034 63)
-
Step 300
300
#DEB899
oklch(80.8% 0.061 61)
-
Step 400
400
#CD925F
oklch(70.7% 0.098 61.1)
-
Step 500
500
#BE762E
oklch(63.1% 0.124 61.7)
-
Step 600
600
#A85E00
oklch(55.6% 0.129 60.9)
-
Step 700
700
#8D4F00
oklch(49.1% 0.113 61.8)
-
Step 800
800
#754000
oklch(42.8% 0.099 61.2)
-
Step 900
900 (this color)
#63390D
oklch(38.8% 0.081 61.5)
-
Step 950
950
#382008
oklch(27% 0.052 62.3)
#63390D 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) | #463D06 | 0.058 |
| Deuteranopia (no green cones) | #50470D | 0.052 |
| Tritanopia (no blue cones) | #6D2F30 | 0.059 |
| Achromatopsia (no color) | #434343 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63390D
#63390D
oklch(38.8% 0.081 61.5)
- #11496C
#11496C
oklch(38.8% 0.081 241.6)
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 #63390D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.037
- Chestnut #742802 ΔE 0.048
- Purple Brown #673A3F ΔE 0.064
- Green Brown #544E03 ΔE 0.068
- Olive Brown #645403 ΔE 0.080
- Rust Brown #8B3103 ΔE 0.081
- Reddy Brown #6E1005 ΔE 0.082
- Milk Chocolate #7F4E1E ΔE 0.083
Use #63390D 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.