#645D23
Closest named color: Greeny Brown (#696006). oklch(47.2% 0.078 102.5), rgb(100, 93, 35).
Aa
White text reads best on this color (6.70:1).
About this color
#645D23 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 47%, its chroma 0.078 and its hue 102°. Its hue sits on the warm side of the wheel. The nearest named color is Greeny Brown (#696006), ΔE 0.023 away. White text reads best on it, at 6.70:1.
| Hue family | Browns |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.078) |
| Temperature | warm |
| Nearest name | Greeny Brown (#696006) |
| Black text | 3.13:1 |
| White text | 6.70:1 |
Values
| HEX | #645D23 |
| RGB | rgb(100, 93, 35) |
| HSL | hsl(54, 48%, 26%) |
| OKLCH | oklch(47.2% 0.078 102.5) |
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 #645D23 | 6.70:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #645D23 | 3.13:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #645D23 text on white | 6.70:1 | AA | Lc 83.0 | Fine for body text |
| #645D23 text on black | 3.13:1 | AA large text | Lc -18.9 | 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 700.
-
Step 50
50
#F6F6F2
oklch(97.2% 0.005 106.5)
-
Step 100
100
#EBEAE2
oklch(93.6% 0.011 100.8)
-
Step 200
200
#DBDACA
oklch(88.5% 0.022 103.9)
-
Step 300
300
#C5C2A6
oklch(80.9% 0.038 102.2)
-
Step 400
400
#A7A376
oklch(70.7% 0.062 103.6)
-
Step 500
500
#928C53
oklch(63.2% 0.078 103.1)
-
Step 600
600
#7D7536
oklch(55.6% 0.085 102.1)
-
Step 700
700 (this color)
#645D23
oklch(47.2% 0.078 102.5)
-
Step 800
800
#565023
oklch(42.6% 0.065 101.8)
-
Step 900
900
#474321
oklch(37.8% 0.052 102.6)
-
Step 950
950
#292714
oklch(26.9% 0.032 103.1)
#645D23 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) | #655A1C | 0.009 |
| Deuteranopia (no green cones) | #685D26 | 0.008 |
| Tritanopia (no blue cones) | #6C5751 | 0.072 |
| Achromatopsia (no color) | #5C5C5C | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645D23
#645D23
oklch(47.2% 0.078 102.5)
- #555586
#555586
oklch(47.1% 0.079 283)
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 #645D23, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Brown #696006 ΔE 0.023
- Mud #735C12 ΔE 0.026
- Olive Brown #645403 ΔE 0.028
- Camo Green #526525 ΔE 0.035
- Mud Green #606602 ΔE 0.039
- Dark Moss Green #606C38 ΔE 0.043
- Dark Olive Green #556B2F ΔE 0.043
- Army Green #4B5D16 ΔE 0.043
Use #645D23 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.