#42390A
Closest named color: Dark Olive (#373E02). oklch(34.4% 0.064 97.9), rgb(66, 57, 10).
Aa
White text reads best on this color (11.53:1).
About this color
#42390A is a dark, muted brown. In OKLCH its lightness is 34%, its chroma 0.064 and its hue 98°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.027 away. White text reads best on it, at 11.53:1.
| Hue family | Browns |
| Lightness | dark (34%) |
| Chroma | muted (0.064) |
| Temperature | warm |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.82:1 |
| White text | 11.53:1 |
Values
| HEX | #42390A |
| RGB | rgb(66, 57, 10) |
| HSL | hsl(50, 74%, 15%) |
| OKLCH | oklch(34.4% 0.064 97.9) |
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 #42390A | 11.53:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #42390A | 1.82:1 | Fails | Lc 7.4 | Not readable |
| #42390A text on white | 11.53:1 | AAA | Lc 96.5 | Preferred for body text |
| #42390A text on black | 1.82:1 | 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
#ECEAE0
oklch(93.6% 0.013 97.4)
-
Step 200
200
#DDDAC6
oklch(88.5% 0.027 99.9)
-
Step 300
300
#C9C19E
oklch(80.8% 0.048 96.6)
-
Step 400
400
#ADA169
oklch(70.6% 0.076 97.6)
-
Step 500
500
#998A3E
oklch(63.1% 0.098 98.3)
-
Step 600
600
#847318
oklch(55.5% 0.106 97.9)
-
Step 700
700
#706006
oklch(49% 0.099 97.5)
-
Step 800
800
#5B4F0D
oklch(42.7% 0.082 98.1)
-
Step 900
900 (this color)
#42390A
oklch(34.4% 0.064 97.9)
-
Step 950
950
#2C270E
oklch(27.2% 0.041 98.2)
#42390A 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) | #403703 | 0.009 |
| Deuteranopia (no green cones) | #423A0D | 0.003 |
| Tritanopia (no blue cones) | #483430 | 0.059 |
| Achromatopsia (no color) | #393939 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42390A
#42390A
oklch(34.4% 0.064 97.9)
- #31355A
#31355A
oklch(34.4% 0.065 277.7)
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 #42390A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.027
- Pakistan Green #283618 ΔE 0.047
- Forrest Green #154406 ΔE 0.069
- Mud Brown #60460F ΔE 0.072
- Charcoal Grey #3C4142 ΔE 0.072
- Pine Green #0A481E ΔE 0.073
- Hunter Green #0B4008 ΔE 0.073
- Evergreen #05472A ΔE 0.073
Use #42390A 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.