#427F4B
Closest named color: Sea Green (#2E8B57). oklch(54.1% 0.102 147.3), rgb(66, 127, 75).
Aa
White text reads best on this color (4.80:1).
About this color
#427F4B is a medium-dark, moderately saturated green. In OKLCH its lightness is 54%, its chroma 0.102 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.035 away. White text reads best on it, at 4.80:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.102) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.36:1 |
| White text | 4.80:1 |
Values
| HEX | #427F4B |
| RGB | rgb(66, 127, 75) |
| HSL | hsl(129, 32%, 38%) |
| OKLCH | oklch(54.1% 0.102 147.3) |
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 #427F4B | 4.80:1 | AA | Lc -78.6 | Fine for body text |
| Black text on #427F4B | 4.36:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #427F4B text on white | 4.80:1 | AA | Lc 73.2 | Content text, not long reading |
| #427F4B text on black | 4.36:1 | AA large text | Lc -28.5 | 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
#F3F7F3
oklch(97.2% 0.007 145.5)
-
Step 100
100
#E4ECE5
oklch(93.5% 0.013 149.2)
-
Step 200
200
#CFDED0
oklch(88.5% 0.025 147.3)
-
Step 300
300
#AEC9B0
oklch(80.9% 0.045 147.2)
-
Step 400
400
#82AE86
oklch(70.8% 0.075 147.1)
-
Step 500
500
#619968
oklch(63.1% 0.094 147.4)
-
Step 600
600 (this color)
#427F4B
oklch(54.1% 0.102 147.3)
-
Step 700
700
#376F40
oklch(49% 0.095 147.5)
-
Step 800
800
#2F5B35
oklch(42.9% 0.079 147.1)
-
Step 900
900
#2A4A2E
oklch(37.6% 0.061 147.2)
-
Step 950
950
#192C1B
oklch(27.1% 0.04 146.9)
#427F4B 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) | #807647 | 0.081 |
| Deuteranopia (no green cones) | #78704E | 0.081 |
| Tritanopia (no blue cones) | #387D72 | 0.059 |
| Achromatopsia (no color) | #727272 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427F4B
#427F4B
oklch(54.1% 0.102 147.3)
- #8E598E
#8E598E
oklch(54.2% 0.101 326.9)
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 #427F4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.035
- Dark Sage #598556 ΔE 0.035
- Jungle Green #048243 ΔE 0.037
- Military Green #667C3E ΔE 0.040
- Muddy Green #657432 ΔE 0.048
- Swamp #698339 ΔE 0.050
- Fern Green #548D44 ΔE 0.051
- Viridian #1E9167 ΔE 0.055
Use #427F4B 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.