#398657
Closest named color: Sea Green (#2E8B57). oklch(55.9% 0.106 154.2), rgb(57, 134, 87).
Aa
Black text reads best on this color (4.72:1).
About this color
#398657 is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.106 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.016 away. Black text reads best on it, at 4.72:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #398657 |
| RGB | rgb(57, 134, 87) |
| HSL | hsl(143, 40%, 37%) |
| OKLCH | oklch(55.9% 0.106 154.2) |
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 #398657 | 4.44:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #398657 | 4.72:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #398657 text on white | 4.44:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #398657 text on black | 4.72:1 | AA | Lc -31.0 | 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
#E3EDE6
oklch(93.7% 0.014 155.6)
-
Step 200
200
#CCDFD1
oklch(88.6% 0.028 153.8)
-
Step 300
300
#AACAB3
oklch(80.9% 0.047 154)
-
Step 400
400
#7BAF8B
oklch(70.7% 0.076 153.9)
-
Step 500
500
#569B6E
oklch(63.1% 0.098 154)
-
Step 600
600 (this color)
#398657
oklch(55.9% 0.106 154.2)
-
Step 700
700
#2A7146
oklch(49.2% 0.099 153.8)
-
Step 800
800
#245C3A
oklch(42.7% 0.082 154.2)
-
Step 900
900
#234B32
oklch(37.6% 0.063 154.5)
-
Step 950
950
#152C1D
oklch(26.9% 0.041 154.1)
#398657 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) | #867C54 | 0.094 |
| Deuteranopia (no green cones) | #7B755A | 0.091 |
| Tritanopia (no blue cones) | #22857A | 0.053 |
| Achromatopsia (no color) | #777777 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #398657
#398657
oklch(55.9% 0.106 154.2)
- #995B8D
#995B8D
oklch(55.8% 0.105 334.3)
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 #398657, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.016
- Dark Sage #598556 ΔE 0.031
- Viridian #1E9167 ΔE 0.033
- Jungle Green #048243 ΔE 0.041
- Light Forest Green #4F9153 ΔE 0.042
- Fern Green #548D44 ΔE 0.043
- Military Green #667C3E ΔE 0.051
- Swamp #698339 ΔE 0.054
Use #398657 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.