#04571E
Closest named color: Forest (#0B5509). oklch(39.9% 0.115 147.4), rgb(4, 87, 30).
Aa
White text reads best on this color (8.79:1).
About this color
#04571E is a dark, moderately saturated green. In OKLCH its lightness is 40%, its chroma 0.115 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest (#0B5509), ΔE 0.016 away. White text reads best on it, at 8.79:1.
| Hue family | Greens |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.115) |
| Temperature | in between |
| Nearest name | Forest (#0B5509) |
| Black text | 2.38:1 |
| White text | 8.79:1 |
Values
| HEX | #04571E |
| RGB | rgb(4, 87, 30) |
| HSL | hsl(139, 91%, 18%) |
| OKLCH | oklch(39.9% 0.115 147.4) |
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 #04571E | 8.79:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #04571E | 2.38:1 | Fails | Lc 14.4 | Not readable |
| #04571E text on white | 8.79:1 | AAA | Lc 89.6 | Fine for body text |
| #04571E text on black | 2.38:1 | Fails | Lc -12.7 | 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
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#DFEFE1
oklch(93.6% 0.025 149.1)
-
Step 200
200
#C5E2C7
oklch(88.4% 0.048 147.1)
-
Step 300
300
#9BD0A1
oklch(80.8% 0.086 147.7)
-
Step 400
400
#5FB86D
oklch(70.8% 0.138 147.4)
-
Step 500
500
#1CA443
oklch(63% 0.176 147.4)
-
Step 600
600
#008B33
oklch(55.5% 0.163 147.4)
-
Step 700
700
#007529
oklch(49% 0.144 147.3)
-
Step 800
800
#006021
oklch(42.6% 0.125 147.5)
-
Step 900
900 (this color)
#04571E
oklch(39.9% 0.115 147.4)
-
Step 950
950
#052F0F
oklch(26.8% 0.072 147.4)
#04571E 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) | #584E18 | 0.090 |
| Deuteranopia (no green cones) | #504823 | 0.090 |
| Tritanopia (no blue cones) | #00554B | 0.068 |
| Achromatopsia (no color) | #4A4A4A | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04571E
#04571E
oklch(39.9% 0.115 147.4)
- #672D67
#672D67
oklch(40% 0.115 327.5)
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 #04571E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest #0B5509 ΔE 0.016
- Deep Green #02590F ΔE 0.016
- Navy Green #35530A ΔE 0.035
- Spruce #0A5F38 ΔE 0.038
- Pine #2B5D34 ΔE 0.044
- Bottle Green #044A05 ΔE 0.044
- Darkgreen #054907 ΔE 0.047
- British Racing Green #05480D ΔE 0.050
Use #04571E 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.