#218756
Closest named color: Sea Green (#2E8B57). oklch(55.4% 0.119 157.2), rgb(33, 135, 86).
Aa
Black text reads best on this color (4.66:1).
About this color
#218756 is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.119 and its hue 157°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.015 away. Black text reads best on it, at 4.66:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.66:1 |
| White text | 4.50:1 |
Values
| HEX | #218756 |
| RGB | rgb(33, 135, 86) |
| HSL | hsl(151, 61%, 33%) |
| OKLCH | oklch(55.4% 0.119 157.2) |
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 #218756 | 4.50:1 | AA | Lc -76.3 | Fine for body text |
| Black text on #218756 | 4.66:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #218756 text on white | 4.50:1 | AA | Lc 70.9 | Content text, not long reading |
| #218756 text on black | 4.66:1 | AA | Lc -30.8 | 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
#E2EDE6
oklch(93.6% 0.015 158.2)
-
Step 200
200
#CADFD1
oklch(88.4% 0.029 156.6)
-
Step 300
300
#A5CCB3
oklch(81% 0.054 156.9)
-
Step 400
400
#72B18B
oklch(70.7% 0.086 156.9)
-
Step 500
500
#489D6F
oklch(63.1% 0.109 157.4)
-
Step 600
600 (this color)
#218756
oklch(55.4% 0.119 157.2)
-
Step 700
700
#117347
oklch(49.1% 0.111 157.3)
-
Step 800
800
#145E3A
oklch(42.8% 0.093 156.9)
-
Step 900
900
#1A4D32
oklch(37.8% 0.072 157)
-
Step 950
950
#112D1D
oklch(27% 0.046 156.4)
#218756 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) | #867C53 | 0.109 |
| Deuteranopia (no green cones) | #797359 | 0.106 |
| Tritanopia (no blue cones) | #00867A | 0.054 |
| Achromatopsia (no color) | #777777 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #218756
#218756
oklch(55.4% 0.119 157.2)
- #9E558C
#9E558C
oklch(55.4% 0.12 337.1)
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 #218756, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.015
- Jungle Green #048243 ΔE 0.030
- Viridian #1E9167 ΔE 0.033
- Dark Sage #598556 ΔE 0.045
- Light Forest Green #4F9153 ΔE 0.049
- Fern Green #548D44 ΔE 0.050
- Kelley Green #009337 ΔE 0.061
- Forest Green #228B22 ΔE 0.061
Use #218756 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.