#63391E
Closest named color: Mud Brown (#60460F). oklch(39% 0.072 51.9), rgb(99, 57, 30).
Aa
White text reads best on this color (9.83:1).
About this color
#63391E is a dark, moderately saturated brown. In OKLCH its lightness is 39%, its chroma 0.072 and its hue 52°. 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 9.83:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.072) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.13:1 |
| White text | 9.83:1 |
Values
| HEX | #63391E |
| RGB | rgb(99, 57, 30) |
| HSL | hsl(23, 53%, 25%) |
| OKLCH | oklch(39% 0.072 51.9) |
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 #63391E | 9.83:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #63391E | 2.13:1 | Fails | Lc 11.4 | Not readable |
| #63391E text on white | 9.83:1 | AAA | Lc 92.6 | Preferred for body text |
| #63391E text on black | 2.13:1 | Fails | Lc -9.9 | 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
#F3E7E1
oklch(93.6% 0.015 48.6)
-
Step 200
200
#EAD4C8
oklch(88.5% 0.03 50.6)
-
Step 300
300
#DEB8A1
oklch(81% 0.054 52.9)
-
Step 400
400
#CC916E
oklch(70.6% 0.087 51.5)
-
Step 500
500
#BE7547
oklch(63.2% 0.111 51.7)
-
Step 600
600
#A95C27
oklch(55.6% 0.12 51.8)
-
Step 700
700
#914B1A
oklch(49.1% 0.112 51.3)
-
Step 800
800
#763E18
oklch(42.7% 0.093 51.4)
-
Step 900
900 (this color)
#63391E
oklch(39% 0.072 51.9)
-
Step 950
950
#382010
oklch(27.1% 0.046 53.3)
#63391E 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) | #453E1B | 0.059 |
| Deuteranopia (no green cones) | #4F471E | 0.054 |
| Tritanopia (no blue cones) | #6C3133 | 0.045 |
| Achromatopsia (no color) | #434343 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63391E
#63391E
oklch(39% 0.072 51.9)
- #104B65
#104B65
oklch(39% 0.072 232.6)
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 #63391E, 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 0.047
- Purple Brown #673A3F ΔE 0.048
- Green Brown #544E03 ΔE 0.076
- Reddy Brown #6E1005 ΔE 0.079
- Brownish Purple #76424E ΔE 0.079
- Rust Brown #8B3103 ΔE 0.080
- Red Brown #8B2E16 ΔE 0.081
Use #63391E 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.