#427D59
Closest named color: Dark Sage (#598556). oklch(53.9% 0.084 155.5), rgb(66, 125, 89).
Aa
White text reads best on this color (4.87:1).
About this color
#427D59 is a medium-dark, moderately saturated green. In OKLCH its lightness is 54%, its chroma 0.084 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 0.038 away. White text reads best on it, at 4.87:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.084) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.30:1 |
| White text | 4.87:1 |
Values
| HEX | #427D59 |
| RGB | rgb(66, 125, 89) |
| HSL | hsl(143, 31%, 37%) |
| OKLCH | oklch(53.9% 0.084 155.5) |
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 #427D59 | 4.87:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #427D59 | 4.30:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #427D59 text on white | 4.87:1 | AA | Lc 73.6 | Content text, not long reading |
| #427D59 text on black | 4.30:1 | AA large text | Lc -28.1 | 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
#E4ECE7
oklch(93.6% 0.011 158.8)
-
Step 200
200
#CFDDD3
oklch(88.4% 0.02 154.9)
-
Step 300
300
#AEC8B6
oklch(80.8% 0.038 155.3)
-
Step 400
400
#82AC90
oklch(70.6% 0.061 155.4)
-
Step 500
500
#629875
oklch(63.2% 0.078 155.1)
-
Step 600
600 (this color)
#427D59
oklch(53.9% 0.084 155.5)
-
Step 700
700
#386E4D
oklch(49.1% 0.079 155.3)
-
Step 800
800
#2F5A3F
oklch(42.8% 0.066 154.9)
-
Step 900
900
#2A4A36
oklch(37.8% 0.051 155.6)
-
Step 950
950
#192B20
oklch(26.9% 0.032 156.7)
#427D59 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) | #7D7557 | 0.077 |
| Deuteranopia (no green cones) | #746F5B | 0.074 |
| Tritanopia (no blue cones) | #347C73 | 0.041 |
| Achromatopsia (no color) | #717171 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427D59
#427D59
oklch(53.9% 0.084 155.5)
- #8D5B82
#8D5B82
oklch(53.9% 0.085 335)
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 #427D59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.038
- Sea Green #2E8B57 ΔE 0.045
- Military Green #667C3E ΔE 0.048
- Jungle Green #048243 ΔE 0.053
- Muddy Green #657432 ΔE 0.055
- Viridian #1E9167 ΔE 0.058
- Dark Moss Green #606C38 ΔE 0.059
- Bluegreen #017A79 ΔE 0.059
Use #427D59 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.