#634E17
Closest named color: Olive Brown (#645403). oklch(43.5% 0.076 87.3), rgb(99, 78, 23).
Aa
White text reads best on this color (7.97:1).
About this color
#634E17 is a dark, moderately saturated brown. In OKLCH its lightness is 43%, its chroma 0.076 and its hue 87°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.024 away. White text reads best on it, at 7.97:1.
| Hue family | Browns |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.076) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.63:1 |
| White text | 7.97:1 |
Values
| HEX | #634E17 |
| RGB | rgb(99, 78, 23) |
| HSL | hsl(43, 62%, 24%) |
| OKLCH | oklch(43.5% 0.076 87.3) |
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 #634E17 | 7.97:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #634E17 | 2.63:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #634E17 text on white | 7.97:1 | AAA | Lc 87.5 | Fine for body text |
| #634E17 text on black | 2.63:1 | Fails | Lc -14.6 | 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
#F7F5F1
oklch(97.1% 0.006 84.6)
-
Step 100
100
#EDE9E0
oklch(93.5% 0.013 86.8)
-
Step 200
200
#E0D8C7
oklch(88.4% 0.025 85.8)
-
Step 300
300
#CDBFA0
oklch(80.8% 0.045 86.6)
-
Step 400
400
#B49E6C
oklch(70.7% 0.072 86.8)
-
Step 500
500
#A18644
oklch(63.1% 0.091 87.4)
-
Step 600
600
#8C6F22
oklch(55.6% 0.099 87.4)
-
Step 700
700
#775D14
oklch(49.2% 0.092 87.6)
-
Step 800
800 (this color)
#634E17
oklch(43.5% 0.076 87.3)
-
Step 900
900
#4F3F18
oklch(37.6% 0.06 86.8)
-
Step 950
950
#2E250F
oklch(26.9% 0.038 87.5)
#634E17 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) | #584D0F | 0.022 |
| Deuteranopia (no green cones) | #5D531A | 0.017 |
| Tritanopia (no blue cones) | #6C4743 | 0.069 |
| Achromatopsia (no color) | #515151 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634E17
#634E17
oklch(43.5% 0.076 87.3)
- #3E4F7B
#3E4F7B
oklch(43.4% 0.076 267.2)
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 #634E17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.024
- Mud Brown #60460F ΔE 0.024
- Green Brown #544E03 ΔE 0.032
- Mud #735C12 ΔE 0.052
- Medium Brown #7F5112 ΔE 0.053
- Milk Chocolate #7F4E1E ΔE 0.054
- Army Green #4B5D16 ΔE 0.058
- Greeny Brown #696006 ΔE 0.058
Use #634E17 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.