#423F02
Closest named color: Dark Olive (#373E02). oklch(35.9% 0.075 106.5), rgb(66, 63, 2).
Aa
White text reads best on this color (10.80:1).
About this color
#423F02 is a dark, moderately saturated brown. In OKLCH its lightness is 36%, its chroma 0.075 and its hue 107°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.020 away. White text reads best on it, at 10.80:1.
| Hue family | Browns |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.075) |
| Temperature | warm |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.94:1 |
| White text | 10.80:1 |
Values
| HEX | #423F02 |
| RGB | rgb(66, 63, 2) |
| HSL | hsl(57, 94%, 13%) |
| OKLCH | oklch(35.9% 0.075 106.5) |
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 #423F02 | 10.80:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #423F02 | 1.94:1 | Fails | Lc 9.0 | Not readable |
| #423F02 text on white | 10.80:1 | AAA | Lc 94.9 | Preferred for body text |
| #423F02 text on black | 1.94:1 | Fails | Lc -7.7 | 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
#F6F6F0
oklch(97.1% 0.008 106.5)
-
Step 100
100
#EBEBDE
oklch(93.7% 0.017 106.7)
-
Step 200
200
#DBDBC3
oklch(88.5% 0.032 107)
-
Step 300
300
#C5C49A
oklch(81% 0.056 106.5)
-
Step 400
400
#A7A560
oklch(70.8% 0.091 107.1)
-
Step 500
500
#928E2E
oklch(63.2% 0.116 107)
-
Step 600
600
#7C7700
oklch(55.6% 0.119 106.8)
-
Step 700
700
#686400
oklch(49.1% 0.105 107)
-
Step 800
800
#555200
oklch(42.8% 0.092 107.3)
-
Step 900
900 (this color)
#423F02
oklch(35.9% 0.075 106.5)
-
Step 950
950
#292809
oklch(27% 0.048 107.4)
#423F02 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) | #463C00 | 0.011 |
| Deuteranopia (no green cones) | #473E07 | 0.011 |
| Tritanopia (no blue cones) | #483A34 | 0.068 |
| Achromatopsia (no color) | #3D3D3D | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423F02
#423F02
oklch(35.9% 0.075 106.5)
- #3A3662
#3A3662
oklch(35.9% 0.075 286.1)
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 #423F02, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.020
- Pakistan Green #283618 ΔE 0.058
- Green Brown #544E03 ΔE 0.059
- Forrest Green #154406 ΔE 0.060
- Mud Brown #60460F ΔE 0.063
- Pine Green #0A481E ΔE 0.063
- Navy Green #35530A ΔE 0.063
- Evergreen #05472A ΔE 0.067
Use #423F02 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.