#645F19
Closest named color: Greeny Brown (#696006). oklch(47.6% 0.089 105.2), rgb(100, 95, 25).
Aa
White text reads best on this color (6.57:1).
About this color
#645F19 is a medium-dark, moderately saturated brown. In OKLCH its lightness is 48%, its chroma 0.089 and its hue 105°. Its hue sits on the warm side of the wheel. The nearest named color is Greeny Brown (#696006), ΔE 0.013 away. White text reads best on it, at 6.57:1.
| Hue family | Browns |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.089) |
| Temperature | warm |
| Nearest name | Greeny Brown (#696006) |
| Black text | 3.19:1 |
| White text | 6.57:1 |
Values
| HEX | #645F19 |
| RGB | rgb(100, 95, 25) |
| HSL | hsl(56, 60%, 25%) |
| OKLCH | oklch(47.6% 0.089 105.2) |
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 #645F19 | 6.57:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #645F19 | 3.19:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #645F19 text on white | 6.57:1 | AA | Lc 82.5 | Fine for body text |
| #645F19 text on black | 3.19:1 | AA large text | Lc -19.4 | 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
#F6F6F1
oklch(97.2% 0.007 106.5)
-
Step 100
100
#EBEAE1
oklch(93.5% 0.012 101.5)
-
Step 200
200
#DBDAC9
oklch(88.5% 0.023 104.1)
-
Step 300
300
#C4C3A3
oklch(81% 0.043 105.9)
-
Step 400
400
#A6A371
oklch(70.6% 0.068 105.1)
-
Step 500
500
#918D4B
oklch(63.2% 0.088 105.6)
-
Step 600
600
#7C762C
oklch(55.6% 0.095 104.7)
-
Step 700
700 (this color)
#645F19
oklch(47.6% 0.089 105.2)
-
Step 800
800
#55511B
oklch(42.7% 0.074 105.1)
-
Step 900
900
#46431D
oklch(37.6% 0.057 104.7)
-
Step 950
950
#292712
oklch(26.9% 0.035 103.7)
#645F19 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) | #685B0E | 0.012 |
| Deuteranopia (no green cones) | #6A5E1E | 0.012 |
| Tritanopia (no blue cones) | #6C5851 | 0.081 |
| Achromatopsia (no color) | #5D5D5D | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645F19
#645F19
oklch(47.6% 0.089 105.2)
- #58558C
#58558C
oklch(47.7% 0.088 285.1)
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 #645F19, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Brown #696006 ΔE 0.013
- Mud #735C12 ΔE 0.025
- Mud Green #606602 ΔE 0.028
- Camo Green #526525 ΔE 0.029
- Olive Brown #645403 ΔE 0.031
- Dark Olive Green #556B2F ΔE 0.038
- Camouflage Green #4B6113 ΔE 0.040
- Dark Moss Green #606C38 ΔE 0.040
Use #645F19 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.