#423F04
Closest named color: Dark Olive (#373E02). oklch(35.9% 0.074 106.4), rgb(66, 63, 4).
Aa
White text reads best on this color (10.80:1).
About this color
#423F04 is a dark, moderately saturated brown. In OKLCH its lightness is 36%, its chroma 0.074 and its hue 106°. 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 (0.074) |
| Temperature | warm |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.94:1 |
| White text | 10.80:1 |
Values
| HEX | #423F04 |
| RGB | rgb(66, 63, 4) |
| HSL | hsl(57, 89%, 14%) |
| OKLCH | oklch(35.9% 0.074 106.4) |
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 #423F04 | 10.80:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #423F04 | 1.94:1 | Fails | Lc 9.0 | Not readable |
| #423F04 text on white | 10.80:1 | AAA | Lc 94.9 | Preferred for body text |
| #423F04 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
#EBEBDF
oklch(93.7% 0.016 106.7)
-
Step 200
200
#DBDBC4
oklch(88.5% 0.031 107)
-
Step 300
300
#C4C39A
oklch(80.8% 0.055 106.4)
-
Step 400
400
#A7A461
oklch(70.6% 0.089 106.2)
-
Step 500
500
#928D30
oklch(63% 0.113 106.2)
-
Step 600
600
#7C7700
oklch(55.6% 0.119 106.8)
-
Step 700
700
#696400
oklch(49.2% 0.105 106.3)
-
Step 800
800
#565200
oklch(42.9% 0.092 106.4)
-
Step 900
900 (this color)
#423F04
oklch(35.9% 0.074 106.4)
-
Step 950
950
#292809
oklch(27% 0.048 107.4)
#423F04 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) | #453C00 | 0.010 |
| Deuteranopia (no green cones) | #473E09 | 0.011 |
| Tritanopia (no blue cones) | #483A35 | 0.068 |
| Achromatopsia (no color) | #3D3D3D | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423F04
#423F04
oklch(35.9% 0.074 106.4)
- #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 #423F04, 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 0.062
- Pine Green #0A481E ΔE 0.063
- Navy Green #35530A ΔE 0.064
- Evergreen #05472A ΔE 0.067
Use #423F04 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.