#138A5F
Closest named color: Sea Green (#2E8B57). oklch(56.2% 0.119 161.9), rgb(19, 138, 95).
Aa
Black text reads best on this color (4.82:1).
About this color
#138A5F is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.119 and its hue 162°. 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 4.82:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.82:1 |
| White text | 4.34:1 |
Values
| HEX | #138A5F |
| RGB | rgb(19, 138, 95) |
| HSL | hsl(158, 76%, 31%) |
| OKLCH | oklch(56.2% 0.119 161.9) |
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 #138A5F | 4.34:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #138A5F | 4.82:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #138A5F text on white | 4.34:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #138A5F text on black | 4.82:1 | AA | Lc -32.0 | 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
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#E1EDE7
oklch(93.5% 0.015 164.7)
-
Step 200
200
#C9E0D3
oklch(88.6% 0.03 161)
-
Step 300
300
#A3CCB6
oklch(81% 0.053 161.5)
-
Step 400
400
#6DB190
oklch(70.6% 0.085 162.1)
-
Step 500
500
#409E75
oklch(63.2% 0.109 161.9)
-
Step 600
600 (this color)
#138A5F
oklch(56.2% 0.119 161.9)
-
Step 700
700
#00734D
oklch(49.1% 0.108 161.8)
-
Step 800
800
#065E3F
oklch(42.7% 0.092 161.9)
-
Step 900
900
#144D36
oklch(37.7% 0.071 162.4)
-
Step 950
950
#0E2D20
oklch(26.9% 0.044 163.2)
#138A5F 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) | #887F5C | 0.114 |
| Deuteranopia (no green cones) | #7A7562 | 0.111 |
| Tritanopia (no blue cones) | #008A7F | 0.048 |
| Achromatopsia (no color) | #797979 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #138A5F
#138A5F
oklch(56.2% 0.119 161.9)
- #A35789
#A35789
oklch(56.3% 0.118 341.6)
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 #138A5F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.016
- Viridian #1E9167 ΔE 0.023
- Jungle Green #048243 ΔE 0.041
- Dark Sage #598556 ΔE 0.048
- Light Forest Green #4F9153 ΔE 0.049
- Fern Green #548D44 ΔE 0.053
- Ocean Green #3D9973 ΔE 0.057
- Kelley Green #009337 ΔE 0.064
Use #138A5F 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.