#40451B
Closest named color: Dark Olive (#373E02). oklch(37.5% 0.063 115.1), rgb(64, 69, 27).
Aa
White text reads best on this color (10.07:1).
About this color
#40451B is a dark, muted brown. In OKLCH its lightness is 38%, its chroma 0.063 and its hue 115°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.034 away. White text reads best on it, at 10.07:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | muted (0.063) |
| Temperature | in between |
| Nearest name | Dark Olive (#373E02) |
| Black text | 2.08:1 |
| White text | 10.07:1 |
Values
| HEX | #40451B |
| RGB | rgb(64, 69, 27) |
| HSL | hsl(67, 44%, 19%) |
| OKLCH | oklch(37.5% 0.063 115.1) |
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 #40451B | 10.07:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #40451B | 2.08:1 | Fails | Lc 10.6 | Not readable |
| #40451B text on white | 10.07:1 | AAA | Lc 93.3 | Preferred for body text |
| #40451B text on black | 2.08:1 | Fails | Lc -9.2 | 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 900.
-
Step 50
50
#F5F6F1
oklch(97.1% 0.007 115.7)
-
Step 100
100
#E9EBE1
oklch(93.6% 0.013 115.8)
-
Step 200
200
#D8DBC8
oklch(88.4% 0.026 114.2)
-
Step 300
300
#BFC5A2
oklch(80.9% 0.048 115.4)
-
Step 400
400
#9FA770
oklch(70.8% 0.076 115.1)
-
Step 500
500
#879049
oklch(63% 0.096 115.2)
-
Step 600
600
#717A29
oklch(55.5% 0.105 115.3)
-
Step 700
700
#5F671B
oklch(49.1% 0.098 115.3)
-
Step 800
800
#4E5419
oklch(42.8% 0.081 114.8)
-
Step 900
900 (this color)
#40451B
oklch(37.5% 0.063 115.1)
-
Step 950
950
#262911
oklch(27.1% 0.04 115)
#40451B 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) | #4A4217 | 0.018 |
| Deuteranopia (no green cones) | #4A421D | 0.020 |
| Tritanopia (no blue cones) | #44413C | 0.055 |
| Achromatopsia (no color) | #424242 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40451B
#40451B
oklch(37.5% 0.063 115.1)
- #443A5F
#443A5F
oklch(37.6% 0.063 295.6)
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 #40451B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.034
- Green Brown #544E03 ΔE 0.050
- Navy Green #35530A ΔE 0.053
- Mud Brown #60460F ΔE 0.056
- Pine Green #0A481E ΔE 0.058
- Evergreen #05472A ΔE 0.059
- Forrest Green #154406 ΔE 0.062
- Charcoal Grey #3C4142 ΔE 0.064
Use #40451B 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.