#427D4B
Closest named color: Dark Sage (#598556). oklch(53.6% 0.099 147.5), rgb(66, 125, 75).
Aa
White text reads best on this color (4.92:1).
About this color
#427D4B is a medium-dark, moderately saturated green. In OKLCH its lightness is 54%, its chroma 0.099 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.039 away. White text reads best on it, at 4.92:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.26:1 |
| White text | 4.92:1 |
Values
| HEX | #427D4B |
| RGB | rgb(66, 125, 75) |
| HSL | hsl(129, 31%, 37%) |
| OKLCH | oklch(53.6% 0.099 147.5) |
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 #427D4B | 4.92:1 | AA | Lc -79.3 | Fine for body text |
| Black text on #427D4B | 4.26:1 | AA large text | Lc 30.2 | Non-text elements, placeholder text |
| #427D4B text on white | 4.92:1 | AA | Lc 73.9 | Content text, not long reading |
| #427D4B text on black | 4.26:1 | AA large text | Lc -27.8 | 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
#83AD87
oklch(70.7% 0.071 147.3)
-
Step 500
500
#629969
oklch(63.1% 0.092 147.5)
-
Step 600
600 (this color)
#427D4B
oklch(53.6% 0.099 147.5)
-
Step 700
700
#396F41
oklch(49.2% 0.093 147.3)
-
Step 800
800
#305A36
oklch(42.6% 0.076 147.4)
-
Step 900
900
#2B4A2F
oklch(37.7% 0.059 147.4)
-
Step 950
950
#192C1C
oklch(27.1% 0.039 148.4)
#427D4B 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) | #7E7448 | 0.079 |
| Deuteranopia (no green cones) | #766E4E | 0.079 |
| Tritanopia (no blue cones) | #387B70 | 0.056 |
| Achromatopsia (no color) | #707070 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427D4B
#427D4B
oklch(53.6% 0.099 147.5)
- #8C588B
#8C588B
oklch(53.6% 0.099 327.5)
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 #427D4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.039
- Jungle Green #048243 ΔE 0.039
- Sea Green #2E8B57 ΔE 0.041
- Military Green #667C3E ΔE 0.041
- Muddy Green #657432 ΔE 0.046
- Swamp #698339 ΔE 0.054
- Dark Olive Green #556B2F ΔE 0.054
- Dark Moss Green #606C38 ΔE 0.055
Use #427D4B 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.