#188B44
Closest named color: Sea Green (#2E8B57). oklch(56% 0.144 150.4), rgb(24, 139, 68).
Aa
Black text reads best on this color (4.81:1).
About this color
#188B44 is a medium-dark, vivid green. In OKLCH its lightness is 56%, its chroma 0.144 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.029 away. Black text reads best on it, at 4.81:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.81:1 |
| White text | 4.36:1 |
Values
| HEX | #188B44 |
| RGB | rgb(24, 139, 68) |
| HSL | hsl(143, 71%, 32%) |
| OKLCH | oklch(56% 0.144 150.4) |
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 #188B44 | 4.36:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #188B44 | 4.81:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #188B44 text on white | 4.36:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #188B44 text on black | 4.81:1 | AA | Lc -31.9 | 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
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E1EEE3
oklch(93.6% 0.02 150.1)
-
Step 200
200
#C9E0CD
oklch(88.4% 0.036 150.5)
-
Step 300
300
#A3CDAB
oklch(80.9% 0.065 150.4)
-
Step 400
400
#6FB37E
oklch(70.7% 0.104 150.1)
-
Step 500
500
#429F5D
oklch(63% 0.132 150.4)
-
Step 600
600 (this color)
#188B44
oklch(56% 0.144 150.4)
-
Step 700
700
#007535
oklch(49.2% 0.134 150.5)
-
Step 800
800
#0B5F2C
oklch(42.7% 0.111 150.4)
-
Step 900
900
#164E28
oklch(37.7% 0.086 150.5)
-
Step 950
950
#0F2E18
oklch(27.1% 0.055 150.7)
#188B44 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) | #8C7E3E | 0.120 |
| Deuteranopia (no green cones) | #7F7549 | 0.118 |
| Tritanopia (no blue cones) | #00887A | 0.080 |
| Achromatopsia (no color) | #797979 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #188B44
#188B44
oklch(56% 0.144 150.4)
- #A2509C
#A2509C
oklch(55.9% 0.145 330.1)
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 #188B44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.029
- Jungle Green #048243 ΔE 0.029
- Kelley Green #009337 ΔE 0.032
- Forest Green #228B22 ΔE 0.032
- Emerald Green #028F1E ΔE 0.041
- Fern Green #548D44 ΔE 0.044
- Irish Green #019529 ΔE 0.046
- Viridian #1E9167 ΔE 0.046
Use #188B44 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.