#428951
Closest named color: Sea Green (#2E8B57). oklch(56.9% 0.112 148.7), rgb(66, 137, 81).
Aa
Black text reads best on this color (4.92:1).
About this color
#428951 is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.112 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.014 away. Black text reads best on it, at 4.92:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.92:1 |
| White text | 4.26:1 |
Values
| HEX | #428951 |
| RGB | rgb(66, 137, 81) |
| HSL | hsl(133, 35%, 40%) |
| OKLCH | oklch(56.9% 0.112 148.7) |
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 #428951 | 4.26:1 | AA large text | Lc -74.7 | Content text, not long reading |
| Black text on #428951 | 4.92:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #428951 text on white | 4.26:1 | AA large text | Lc 69.2 | Content text, not long reading |
| #428951 text on black | 4.92:1 | AA | Lc -32.4 | Non-text elements, placeholder text |
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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E4EDE5
oklch(93.7% 0.014 148.8)
-
Step 200
200
#CDDFCF
oklch(88.6% 0.029 148.6)
-
Step 300
300
#ABCAAF
oklch(80.9% 0.05 148.8)
-
Step 400
400
#7DAF85
oklch(70.7% 0.081 148.9)
-
Step 500
500
#5A9B66
oklch(63.2% 0.104 148.7)
-
Step 600
600 (this color)
#428951
oklch(56.9% 0.112 148.7)
-
Step 700
700
#2F713E
oklch(49.2% 0.105 148.7)
-
Step 800
800
#285C34
oklch(42.8% 0.086 149.1)
-
Step 900
900
#264B2D
oklch(37.6% 0.067 148.6)
-
Step 950
950
#172C1B
oklch(27% 0.042 149.1)
#428951 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) | #8A7F4D | 0.091 |
| Deuteranopia (no green cones) | #807855 | 0.090 |
| Tritanopia (no blue cones) | #34877B | 0.063 |
| Achromatopsia (no color) | #7B7B7B | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428951
#428951
oklch(56.9% 0.112 148.7)
- #9B5E98
#9B5E98
oklch(57% 0.112 328.7)
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 #428951, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.014
- Fern Green #548D44 ΔE 0.027
- Dark Sage #598556 ΔE 0.028
- Light Forest Green #4F9153 ΔE 0.028
- Viridian #1E9167 ΔE 0.033
- Moss Green #658B38 ΔE 0.044
- Swamp #698339 ΔE 0.044
- Jungle Green #048243 ΔE 0.046
Use #428951 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.