#278564
Closest named color: Sea Green (#2E8B57). oklch(55.3% 0.101 165.4), rgb(39, 133, 100).
Aa
Black text reads best on this color (4.62:1).
About this color
#278564 is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.101 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.030 away. Black text reads best on it, at 4.62:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.62:1 |
| White text | 4.54:1 |
Values
| HEX | #278564 |
| RGB | rgb(39, 133, 100) |
| HSL | hsl(159, 55%, 34%) |
| OKLCH | oklch(55.3% 0.101 165.4) |
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 #278564 | 4.54:1 | AA | Lc -76.7 | Fine for body text |
| Black text on #278564 | 4.62:1 | AA | Lc 32.9 | Non-text elements, placeholder text |
| #278564 text on white | 4.54:1 | AA | Lc 71.2 | Content text, not long reading |
| #278564 text on black | 4.62:1 | AA | Lc -30.5 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E2EDE8
oklch(93.6% 0.013 167.2)
-
Step 200
200
#CBDFD5
oklch(88.6% 0.025 164.4)
-
Step 300
300
#A6CAB9
oklch(80.8% 0.045 165)
-
Step 400
400
#74AF96
oklch(70.6% 0.072 166)
-
Step 500
500
#4B9B7C
oklch(63% 0.093 165.8)
-
Step 600
600 (this color)
#278564
oklch(55.3% 0.101 165.4)
-
Step 700
700
#187154
oklch(49% 0.094 165.9)
-
Step 800
800
#195C44
oklch(42.6% 0.078 165)
-
Step 900
900
#1C4C3A
oklch(37.8% 0.061 165.7)
-
Step 950
950
#122C22
oklch(26.9% 0.038 166.4)
#278564 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) | #827B62 | 0.100 |
| Deuteranopia (no green cones) | #767266 | 0.098 |
| Tritanopia (no blue cones) | #00857C | 0.037 |
| Achromatopsia (no color) | #767676 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #278564
#278564
oklch(55.3% 0.101 165.4)
- #9C5980
#9C5980
oklch(55.3% 0.101 345)
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 #278564, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.030
- Viridian #1E9167 ΔE 0.036
- Dark Sage #598556 ΔE 0.044
- Jungle Green #048243 ΔE 0.049
- Teal #008080 ΔE 0.051
- Dark Cyan #008B8B ΔE 0.056
- Bluegreen #017A79 ΔE 0.056
- Light Forest Green #4F9153 ΔE 0.059
Use #278564 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.