#40370E
Closest named color: Dark Olive (#373E02). oklch(33.7% 0.059 96.6), rgb(64, 55, 14).
Aa
White text reads best on this color (11.85:1).
About this color
#40370E is a dark, muted brown. In OKLCH its lightness is 34%, its chroma 0.059 and its hue 97°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.031 away. White text reads best on it, at 11.85:1.
| Hue family | Browns |
| Lightness | dark (34%) |
| Chroma | muted (0.059) |
| Temperature | warm |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.77:1 |
| White text | 11.85:1 |
Values
| HEX | #40370E |
| RGB | rgb(64, 55, 14) |
| HSL | hsl(49, 64%, 15%) |
| OKLCH | oklch(33.7% 0.059 96.6) |
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 #40370E | 11.85:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #40370E | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #40370E text on white | 11.85:1 | AAA | Lc 97.1 | Preferred for body text |
| #40370E text on black | 1.77:1 | Fails | Lc 0.0 | 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
#F6F5F1
oklch(97% 0.005 95.1)
-
Step 100
100
#ECEAE1
oklch(93.6% 0.012 96.4)
-
Step 200
200
#DDD9C7
oklch(88.4% 0.025 96.6)
-
Step 300
300
#C8C1A1
oklch(80.8% 0.044 97)
-
Step 400
400
#ADA16E
oklch(70.7% 0.07 96.5)
-
Step 500
500
#998946
oklch(63% 0.09 96.2)
-
Step 600
600
#847325
oklch(55.6% 0.098 96.7)
-
Step 700
700
#706017
oklch(49.1% 0.091 96.2)
-
Step 800
800
#5B4F16
oklch(42.8% 0.076 97)
-
Step 900
900 (this color)
#40370E
oklch(33.7% 0.059 96.6)
-
Step 950
950
#2C2610
oklch(26.9% 0.037 94.5)
#40370E 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) | #3D3609 | 0.008 |
| Deuteranopia (no green cones) | #403910 | 0.006 |
| Tritanopia (no blue cones) | #46322F | 0.055 |
| Achromatopsia (no color) | #373737 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40370E
#40370E
oklch(33.7% 0.059 96.6)
- #2F3455
#2F3455
oklch(33.7% 0.058 276.2)
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 #40370E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.031
- Pakistan Green #283618 ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.071
- Onyx #343A40 ΔE 0.071
- Forrest Green #154406 ΔE 0.072
- Hunter Green #0B4008 ΔE 0.073
- Evergreen #05472A ΔE 0.074
- Pine Green #0A481E ΔE 0.075
Use #40370E 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.