#427A57
Closest named color: Dark Sage (#598556). oklch(53.1% 0.082 155), rgb(66, 122, 87).
Aa
White text reads best on this color (5.05:1).
About this color
#427A57 is a medium-dark, moderately saturated green. In OKLCH its lightness is 53%, its chroma 0.082 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.045 away. White text reads best on it, at 5.05:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.082) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.15:1 |
| White text | 5.05:1 |
Values
| HEX | #427A57 |
| RGB | rgb(66, 122, 87) |
| HSL | hsl(143, 30%, 37%) |
| OKLCH | oklch(53.1% 0.082 155) |
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 #427A57 | 5.05:1 | AA | Lc -80.2 | Fine for body text |
| Black text on #427A57 | 4.15:1 | AA large text | Lc 29.3 | Dividers and decoration only |
| #427A57 text on white | 5.05:1 | AA | Lc 74.8 | Content text, not long reading |
| #427A57 text on black | 4.15:1 | AA large text | Lc -26.9 | Dividers and decoration only |
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 600.
-
Step 50
50
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E5ECE7
oklch(93.6% 0.01 155.1)
-
Step 200
200
#CFDDD3
oklch(88.4% 0.02 154.9)
-
Step 300
300
#AFC8B6
oklch(80.9% 0.037 154.2)
-
Step 400
400
#84AC91
oklch(70.7% 0.059 155.1)
-
Step 500
500
#649776
oklch(63.1% 0.074 155.3)
-
Step 600
600 (this color)
#427A57
oklch(53.1% 0.082 155)
-
Step 700
700
#3A6D4E
oklch(49% 0.075 155.7)
-
Step 800
800
#315940
oklch(42.7% 0.062 155.3)
-
Step 900
900
#2B4936
oklch(37.6% 0.049 155.5)
-
Step 950
950
#1A2B20
oklch(27% 0.031 155.4)
#427A57 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) | #7A7255 | 0.074 |
| Deuteranopia (no green cones) | #716C59 | 0.072 |
| Tritanopia (no blue cones) | #367971 | 0.041 |
| Achromatopsia (no color) | #6F6F6F | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427A57
#427A57
oklch(53.1% 0.082 155)
- #895A7F
#895A7F
oklch(53.1% 0.081 334.6)
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 #427A57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.045
- Military Green #667C3E ΔE 0.051
- Dark Moss Green #606C38 ΔE 0.053
- Sea Green #2E8B57 ΔE 0.053
- Muddy Green #657432 ΔE 0.053
- Jungle Green #048243 ΔE 0.056
- Dark Olive Green #556B2F ΔE 0.056
- Bluegreen #017A79 ΔE 0.058
Use #427A57 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.