#40452E
Closest named color: Charcoal Grey (#3C4142). oklch(37.9% 0.038 118.2), rgb(64, 69, 46).
Aa
White text reads best on this color (9.95:1).
About this color
#40452E is a dark, muted brown. In OKLCH its lightness is 38%, its chroma 0.038 and its hue 118°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.039 away. White text reads best on it, at 9.95:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | muted (0.038) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.10:1 |
| White text | 9.95:1 |
Values
| HEX | #40452E |
| RGB | rgb(64, 69, 46) |
| HSL | hsl(73, 20%, 23%) |
| OKLCH | oklch(37.9% 0.038 118.2) |
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 #40452E | 9.95:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #40452E | 2.10:1 | Fails | Lc 10.8 | Not readable |
| #40452E text on white | 9.95:1 | AAA | Lc 93.1 | Preferred for body text |
| #40452E text on black | 2.10:1 | Fails | Lc -9.4 | 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
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#E9EBE5
oklch(93.7% 0.008 121.6)
-
Step 200
200
#D8DBCF
oklch(88.6% 0.016 118.2)
-
Step 300
300
#BEC3AF
oklch(80.8% 0.028 118.4)
-
Step 400
400
#9EA585
oklch(70.8% 0.046 117.6)
-
Step 500
500
#868F67
oklch(63.2% 0.058 118.4)
-
Step 600
600
#70794E
oklch(55.7% 0.063 118.1)
-
Step 700
700
#5D653F
oklch(49% 0.058 118.3)
-
Step 800
800
#4C5334
oklch(42.7% 0.049 118.9)
-
Step 900
900 (this color)
#40452E
oklch(37.9% 0.038 118.2)
-
Step 950
950
#25281B
oklch(26.9% 0.023 118.6)
#40452E 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) | #48432C | 0.014 |
| Deuteranopia (no green cones) | #47432F | 0.013 |
| Tritanopia (no blue cones) | #42433F | 0.031 |
| Achromatopsia (no color) | #434343 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40452E
#40452E
oklch(37.9% 0.038 118.2)
- #443E54
#443E54
oklch(37.9% 0.038 297.1)
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 #40452E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.039
- Dark Olive #373E02 ΔE 0.052
- Dark Slate Gray #2F4F4F ΔE 0.053
- Onyx #343A40 ΔE 0.058
- Mud Brown #60460F ΔE 0.062
- Evergreen #05472A ΔE 0.062
- Green Brown #544E03 ΔE 0.063
- Dark Blue Green #005249 ΔE 0.065
Use #40452E 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.