#398B57
Closest named color: Sea Green (#2E8B57). oklch(57.2% 0.114 153), rgb(57, 139, 87).
Aa
Black text reads best on this color (5.00:1).
About this color
#398B57 is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.114 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.007 away. Black text reads best on it, at 5.00:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.114) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 5.00:1 |
| White text | 4.19:1 |
Values
| HEX | #398B57 |
| RGB | rgb(57, 139, 87) |
| HSL | hsl(142, 42%, 38%) |
| OKLCH | oklch(57.2% 0.114 153) |
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 #398B57 | 4.19:1 | AA large text | Lc -74.2 | Content text, not long reading |
| Black text on #398B57 | 5.00:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #398B57 text on white | 4.19:1 | AA large text | Lc 68.7 | Content text, not long reading |
| #398B57 text on black | 5.00:1 | AA | Lc -33.0 | 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
#CCDFD0
oklch(88.5% 0.029 151.9)
-
Step 300
300
#A8CBB1
oklch(80.9% 0.052 153)
-
Step 400
400
#78B088
oklch(70.7% 0.083 152.9)
-
Step 500
500
#539C6B
oklch(63.2% 0.105 153)
-
Step 600
600 (this color)
#398B57
oklch(57.2% 0.114 153)
-
Step 700
700
#257243
oklch(49.2% 0.106 153)
-
Step 800
800
#215C37
oklch(42.6% 0.087 153)
-
Step 900
900
#214C30
oklch(37.7% 0.068 153.2)
-
Step 950
950
#142D1C
oklch(27.1% 0.045 152.8)
#398B57 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) | #8B8054 | 0.099 |
| Deuteranopia (no green cones) | #80795A | 0.096 |
| Tritanopia (no blue cones) | #20897E | 0.059 |
| Achromatopsia (no color) | #7C7C7C | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #398B57
#398B57
oklch(57.2% 0.114 153)
- #9F5D95
#9F5D95
oklch(57.2% 0.114 332.7)
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 #398B57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.007
- Viridian #1E9167 ΔE 0.024
- Light Forest Green #4F9153 ΔE 0.029
- Fern Green #548D44 ΔE 0.033
- Dark Sage #598556 ΔE 0.033
- Jungle Green #048243 ΔE 0.046
- Ocean Green #3D9973 ΔE 0.050
- Moss Green #658B38 ΔE 0.050
Use #398B57 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.