#427F63
Closest named color: Dark Sage (#598556). oklch(54.7% 0.078 162.4), rgb(66, 127, 99).
Aa
White text reads best on this color (4.72:1).
About this color
#427F63 is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.078 and its hue 162°. 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 4.72:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.078) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.44:1 |
| White text | 4.72:1 |
Values
| HEX | #427F63 |
| RGB | rgb(66, 127, 99) |
| HSL | hsl(152, 32%, 38%) |
| OKLCH | oklch(54.7% 0.078 162.4) |
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 #427F63 | 4.72:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #427F63 | 4.44:1 | AA large text | Lc 31.4 | Non-text elements, placeholder text |
| #427F63 text on white | 4.72:1 | AA | Lc 72.6 | Content text, not long reading |
| #427F63 text on black | 4.44:1 | AA large text | Lc -29.0 | 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
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CEDDD5
oklch(88.4% 0.019 162.9)
-
Step 300
300
#ADC8BA
oklch(80.9% 0.035 163)
-
Step 400
400
#81AC96
oklch(70.7% 0.056 162.3)
-
Step 500
500
#60977C
oklch(63% 0.072 162.1)
-
Step 600
600 (this color)
#427F63
oklch(54.7% 0.078 162.4)
-
Step 700
700
#366E54
oklch(49.2% 0.073 161.9)
-
Step 800
800
#2D5945
oklch(42.6% 0.06 162.7)
-
Step 900
900
#29493A
oklch(37.6% 0.046 162.8)
-
Step 950
950
#192B22
oklch(27% 0.029 161.9)
#427F63 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) | #7D7762 | 0.076 |
| Deuteranopia (no green cones) | #747165 | 0.073 |
| Tritanopia (no blue cones) | #307F77 | 0.032 |
| Achromatopsia (no color) | #737373 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427F63
#427F63
oklch(54.7% 0.078 162.4)
- #905E7D
#905E7D
oklch(54.6% 0.078 342.2)
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 #427F63, 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 0.048
- Teal #008080 ΔE 0.050
- Bluegreen #017A79 ΔE 0.052
- Viridian #1E9167 ΔE 0.055
- Military Green #667C3E ΔE 0.056
- Dark Cyan #008B8B ΔE 0.061
- Slate Green #658D6D ΔE 0.061
Use #427F63 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.