#438B57
Closest named color: Sea Green (#2E8B57). oklch(57.6% 0.108 150.8), rgb(67, 139, 87).
Aa
Black text reads best on this color (5.06:1).
About this color
#438B57 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.108 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.015 away. Black text reads best on it, at 5.06:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 5.06:1 |
| White text | 4.14:1 |
Values
| HEX | #438B57 |
| RGB | rgb(67, 139, 87) |
| HSL | hsl(137, 35%, 40%) |
| OKLCH | oklch(57.6% 0.108 150.8) |
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 #438B57 | 4.14:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #438B57 | 5.06:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #438B57 text on white | 4.14:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #438B57 text on black | 5.06:1 | AA | Lc -33.4 | 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
#E3EDE5
oklch(93.6% 0.015 151.8)
-
Step 200
200
#CDDFD0
oklch(88.6% 0.028 150.4)
-
Step 300
300
#ABCAB1
oklch(80.9% 0.048 150.9)
-
Step 400
400
#7DAF88
oklch(70.8% 0.078 150.8)
-
Step 500
500
#5A9B6A
oklch(63.2% 0.1 150.6)
-
Step 600
600 (this color)
#438B57
oklch(57.6% 0.108 150.8)
-
Step 700
700
#2E7042
oklch(49% 0.1 151)
-
Step 800
800
#285C36
oklch(42.8% 0.084 150.3)
-
Step 900
900
#254B2F
oklch(37.6% 0.065 150.8)
-
Step 950
950
#172C1C
oklch(27% 0.04 150.6)
#438B57 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) | #8C8154 | 0.092 |
| Deuteranopia (no green cones) | #817A5A | 0.089 |
| Tritanopia (no blue cones) | #33897E | 0.059 |
| Achromatopsia (no color) | #7D7D7D | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #438B57
#438B57
oklch(57.6% 0.108 150.8)
- #9D6097
#9D6097
oklch(57.6% 0.109 330.4)
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 #438B57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.015
- Light Forest Green #4F9153 ΔE 0.024
- Dark Sage #598556 ΔE 0.026
- Viridian #1E9167 ΔE 0.027
- Fern Green #548D44 ΔE 0.028
- Moss Green #658B38 ΔE 0.045
- Swamp #698339 ΔE 0.047
- Ocean Green #3D9973 ΔE 0.047
Use #438B57 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.