#645401
Closest named color: Olive Brown (#645403). oklch(44.9% 0.092 96.2), rgb(100, 84, 1).
Aa
White text reads best on this color (7.47:1).
About this color
#645401 is a dark, moderately saturated brown. In OKLCH its lightness is 45%, its chroma 0.092 and its hue 96°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.001 away. White text reads best on it, at 7.47:1.
| Hue family | Browns |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.092) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.81:1 |
| White text | 7.47:1 |
Values
| HEX | #645401 |
| RGB | rgb(100, 84, 1) |
| HSL | hsl(50, 98%, 20%) |
| OKLCH | oklch(44.9% 0.092 96.2) |
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 #645401 | 7.47:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #645401 | 2.81:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #645401 text on white | 7.47:1 | AAA | Lc 85.8 | Fine for body text |
| #645401 text on black | 2.81:1 | Fails | Lc -16.2 | 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
#EDEADF
oklch(93.6% 0.015 94.2)
-
Step 200
200
#DFDAC4
oklch(88.6% 0.03 96.4)
-
Step 300
300
#CAC19A
oklch(80.8% 0.053 96.6)
-
Step 400
400
#B0A161
oklch(70.7% 0.086 96.5)
-
Step 500
500
#9D8930
oklch(63.1% 0.11 96.3)
-
Step 600
600
#877200
oklch(55.5% 0.114 96.2)
-
Step 700
700
#726000
oklch(49.2% 0.101 96.3)
-
Step 800
800 (this color)
#645401
oklch(44.9% 0.092 96.2)
-
Step 900
900
#4D410A
oklch(37.7% 0.072 95.9)
-
Step 950
950
#2D2609
oklch(26.9% 0.045 95.6)
#645401 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) | #5E5200 | 0.013 |
| Deuteranopia (no green cones) | #625709 | 0.009 |
| Tritanopia (no blue cones) | #6D4C46 | 0.084 |
| Achromatopsia (no color) | #555555 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #645401
#645401
oklch(44.9% 0.092 96.2)
- #484F87
#484F87
oklch(44.8% 0.092 276.6)
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 #645401, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.001
- Green Brown #544E03 ΔE 0.035
- Greeny Brown #696006 ΔE 0.037
- Mud #735C12 ΔE 0.037
- Army Green #4B5D16 ΔE 0.044
- Mud Brown #60460F ΔE 0.045
- Camouflage Green #4B6113 ΔE 0.050
- Camo Green #526525 ΔE 0.052
Use #645401 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.