#664F02
Closest named color: Olive Brown (#645403). oklch(43.9% 0.089 89), rgb(102, 79, 2).
Aa
White text reads best on this color (7.82:1).
About this color
#664F02 is a dark, moderately saturated brown. In OKLCH its lightness is 44%, its chroma 0.089 and its hue 89°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.015 away. White text reads best on it, at 7.82:1.
| Hue family | Browns |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.089) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.68:1 |
| White text | 7.82:1 |
Values
| HEX | #664F02 |
| RGB | rgb(102, 79, 2) |
| HSL | hsl(46, 96%, 20%) |
| OKLCH | oklch(43.9% 0.089 89) |
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 #664F02 | 7.82:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #664F02 | 2.68:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #664F02 text on white | 7.82:1 | AAA | Lc 87.0 | Fine for body text |
| #664F02 text on black | 2.68:1 | Fails | Lc -15.1 | Dividers and decoration only |
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
#EEEADF
oklch(93.7% 0.015 90.2)
-
Step 200
200
#E1D9C4
oklch(88.6% 0.029 89.6)
-
Step 300
300
#CEC09B
oklch(81% 0.052 89.8)
-
Step 400
400
#B59E63
oklch(70.6% 0.082 88.9)
-
Step 500
500
#A38633
oklch(63.1% 0.106 89.5)
-
Step 600
600
#8E6F00
oklch(55.6% 0.114 89.2)
-
Step 700
700
#785D00
oklch(49.2% 0.101 88.9)
-
Step 800
800 (this color)
#664F02
oklch(43.9% 0.089 89)
-
Step 900
900
#503F0D
oklch(37.6% 0.069 89)
-
Step 950
950
#2F250A
oklch(26.9% 0.044 88.7)
#664F02 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) | #5A4E00 | 0.022 |
| Deuteranopia (no green cones) | #605508 | 0.019 |
| Tritanopia (no blue cones) | #704742 | 0.080 |
| Achromatopsia (no color) | #525252 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664F02
#664F02
oklch(43.9% 0.089 89)
- #3E4F83
#3E4F83
oklch(43.9% 0.089 268.9)
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 #664F02, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.015
- Mud Brown #60460F ΔE 0.032
- Green Brown #544E03 ΔE 0.033
- Mud #735C12 ΔE 0.046
- Medium Brown #7F5112 ΔE 0.050
- Greeny Brown #696006 ΔE 0.050
- Milk Chocolate #7F4E1E ΔE 0.053
- Army Green #4B5D16 ΔE 0.055
Use #664F02 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.