#188A47
Closest named color: Sea Green (#2E8B57). oklch(55.8% 0.14 151.5), rgb(24, 138, 71).
Aa
Black text reads best on this color (4.76:1).
About this color
#188A47 is a medium-dark, vivid green. In OKLCH its lightness is 56%, its chroma 0.140 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 0.025 away. Black text reads best on it, at 4.76:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.140) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.76:1 |
| White text | 4.40:1 |
Values
| HEX | #188A47 |
| RGB | rgb(24, 138, 71) |
| HSL | hsl(145, 70%, 32%) |
| OKLCH | oklch(55.8% 0.14 151.5) |
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 #188A47 | 4.40:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #188A47 | 4.76:1 | AA | Lc 34.0 | Non-text elements, placeholder text |
| #188A47 text on white | 4.40:1 | AA large text | Lc 70.1 | Content text, not long reading |
| #188A47 text on black | 4.76:1 | AA | Lc -31.6 | 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
#E1EEE4
oklch(93.7% 0.019 152.8)
-
Step 200
200
#C9E0CE
oklch(88.5% 0.035 152)
-
Step 300
300
#A3CDAC
oklch(80.9% 0.064 151.2)
-
Step 400
400
#6FB381
oklch(70.8% 0.101 151.6)
-
Step 500
500
#439F60
oklch(63.1% 0.129 151.3)
-
Step 600
600 (this color)
#188A47
oklch(55.8% 0.14 151.5)
-
Step 700
700
#017538
oklch(49.2% 0.131 151.4)
-
Step 800
800
#0C5F2F
oklch(42.7% 0.108 151.6)
-
Step 900
900
#164E2A
oklch(37.7% 0.084 151.7)
-
Step 950
950
#0F2E19
oklch(27.1% 0.054 151.7)
#188A47 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) | #8A7E42 | 0.117 |
| Deuteranopia (no green cones) | #7E754C | 0.116 |
| Tritanopia (no blue cones) | #00887A | 0.075 |
| Achromatopsia (no color) | #787878 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #188A47
#188A47
oklch(55.8% 0.14 151.5)
- #A15198
#A15198
oklch(55.7% 0.139 331.6)
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 #188A47, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.025
- Jungle Green #048243 ΔE 0.026
- Forest Green #228B22 ΔE 0.037
- Kelley Green #009337 ΔE 0.037
- Viridian #1E9167 ΔE 0.043
- Fern Green #548D44 ΔE 0.044
- Emerald Green #028F1E ΔE 0.046
- Tree Green #2A7E19 ΔE 0.047
Use #188A47 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.