#634E07
Closest named color: Olive Brown (#645403). oklch(43.4% 0.085 90), rgb(99, 78, 7).
Aa
White text reads best on this color (8.00:1).
About this color
#634E07 is a dark, moderately saturated brown. In OKLCH its lightness is 43%, its chroma 0.085 and its hue 90°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.018 away. White text reads best on it, at 8.00:1.
| Hue family | Browns |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.085) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.62:1 |
| White text | 8.00:1 |
Values
| HEX | #634E07 |
| RGB | rgb(99, 78, 7) |
| HSL | hsl(46, 87%, 21%) |
| OKLCH | oklch(43.4% 0.085 90) |
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 #634E07 | 8.00:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #634E07 | 2.62:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #634E07 text on white | 8.00:1 | AAA | Lc 87.6 | Fine for body text |
| #634E07 text on black | 2.62:1 | Fails | Lc -14.5 | 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
#F7F5F0
oklch(97% 0.007 88.6)
-
Step 100
100
#EDEADF
oklch(93.6% 0.015 94.2)
-
Step 200
200
#E0D9C5
oklch(88.5% 0.028 90.9)
-
Step 300
300
#CDC09C
oklch(80.9% 0.051 90.5)
-
Step 400
400
#B49F65
oklch(70.8% 0.081 90.3)
-
Step 500
500
#A18638
oklch(63% 0.102 90)
-
Step 600
600
#8C6F0A
oklch(55.5% 0.11 90)
-
Step 700
700
#775D00
oklch(49.1% 0.1 89.6)
-
Step 800
800 (this color)
#634E07
oklch(43.4% 0.085 90)
-
Step 900
900
#4F4011
oklch(37.8% 0.066 90.8)
-
Step 950
950
#2E250C
oklch(26.8% 0.041 89.6)
#634E07 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) | #594D00 | 0.020 |
| Deuteranopia (no green cones) | #5E530D | 0.016 |
| Tritanopia (no blue cones) | #6C4642 | 0.078 |
| Achromatopsia (no color) | #505050 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634E07
#634E07
oklch(43.4% 0.085 90)
- #3F4E80
#3F4E80
oklch(43.5% 0.085 270)
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 #634E07, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.018
- Mud Brown #60460F ΔE 0.026
- Green Brown #544E03 ΔE 0.027
- Mud #735C12 ΔE 0.051
- Army Green #4B5D16 ΔE 0.055
- Greeny Brown #696006 ΔE 0.055
- Medium Brown #7F5112 ΔE 0.055
- Milk Chocolate #7F4E1E ΔE 0.057
Use #634E07 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.