#634E27
Closest named color: Mud Brown (#60460F). oklch(43.7% 0.062 81.4), rgb(99, 78, 39).
Aa
White text reads best on this color (7.92:1).
About this color
#634E27 is a dark, muted brown. In OKLCH its lightness is 44%, its chroma 0.062 and its hue 81°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.029 away. White text reads best on it, at 7.92:1.
| Hue family | Browns |
| Lightness | dark (44%) |
| Chroma | muted (0.062) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.64:1 |
| White text | 7.92:1 |
Values
| HEX | #634E27 |
| RGB | rgb(99, 78, 39) |
| HSL | hsl(39, 43%, 27%) |
| OKLCH | oklch(43.7% 0.062 81.4) |
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 #634E27 | 7.92:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #634E27 | 2.64:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #634E27 text on white | 7.92:1 | AAA | Lc 87.4 | Fine for body text |
| #634E27 text on black | 2.64:1 | Fails | Lc -14.7 | 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 800.
-
Step 50
50
#F7F5F2
oklch(97.1% 0.005 78.3)
-
Step 100
100
#EDE9E2
oklch(93.5% 0.01 81.8)
-
Step 200
200
#E0D8CB
oklch(88.5% 0.02 80.1)
-
Step 300
300
#CDBFA7
oklch(81% 0.036 81.2)
-
Step 400
400
#B39D77
oklch(70.6% 0.058 81.1)
-
Step 500
500
#A08554
oklch(63% 0.074 81.6)
-
Step 600
600
#8B6E38
oklch(55.5% 0.081 81.3)
-
Step 700
700
#765C2A
oklch(49% 0.075 81.7)
-
Step 800
800 (this color)
#634E27
oklch(43.7% 0.062 81.4)
-
Step 900
900
#4F3F22
oklch(37.7% 0.049 81.3)
-
Step 950
950
#2E2515
oklch(27% 0.03 81.3)
#634E27 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) | #574E23 | 0.023 |
| Deuteranopia (no green cones) | #5C5328 | 0.018 |
| Tritanopia (no blue cones) | #6B4845 | 0.054 |
| Achromatopsia (no color) | #515151 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634E27
#634E27
oklch(43.7% 0.062 81.4)
- #3E5274
#3E5274
oklch(43.7% 0.062 260.7)
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 #634E27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.029
- Olive Brown #645403 ΔE 0.037
- Green Brown #544E03 ΔE 0.043
- Milk Chocolate #7F4E1E ΔE 0.052
- Medium Brown #7F5112 ΔE 0.054
- Mud #735C12 ΔE 0.058
- Greeny Brown #696006 ΔE 0.066
- Army Green #4B5D16 ΔE 0.066
Use #634E27 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.