#287F5A
Closest named color: Sea Green (#2E8B57). oklch(53.5% 0.101 161.3), rgb(40, 127, 90).
Aa
White text reads best on this color (4.91:1).
About this color
#287F5A is a medium-dark, moderately saturated green. In OKLCH its lightness is 53%, its chroma 0.101 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.040 away. White text reads best on it, at 4.91:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.27:1 |
| White text | 4.91:1 |
Values
| HEX | #287F5A |
| RGB | rgb(40, 127, 90) |
| HSL | hsl(154, 52%, 33%) |
| OKLCH | oklch(53.5% 0.101 161.3) |
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 #287F5A | 4.91:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #287F5A | 4.27:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #287F5A text on white | 4.91:1 | AA | Lc 73.7 | Content text, not long reading |
| #287F5A text on black | 4.27:1 | AA large text | Lc -28.0 | Dividers and decoration only |
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
#E3EDE7
oklch(93.7% 0.013 159.9)
-
Step 200
200
#CBDFD4
oklch(88.6% 0.026 161.9)
-
Step 300
300
#A8CAB7
oklch(80.9% 0.045 160.7)
-
Step 400
400
#77AF92
oklch(70.7% 0.073 161.2)
-
Step 500
500
#509B77
oklch(63.1% 0.094 161.2)
-
Step 600
600 (this color)
#287F5A
oklch(53.5% 0.101 161.3)
-
Step 700
700
#21714F
oklch(49.1% 0.095 161.1)
-
Step 800
800
#1E5C41
oklch(42.7% 0.078 161.3)
-
Step 900
900
#1F4C37
oklch(37.8% 0.062 161)
-
Step 950
950
#142C20
oklch(26.9% 0.038 160.6)
#287F5A 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) | #7D7558 | 0.097 |
| Deuteranopia (no green cones) | #726D5C | 0.095 |
| Tritanopia (no blue cones) | #007F75 | 0.041 |
| Achromatopsia (no color) | #717171 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #287F5A
#287F5A
oklch(53.5% 0.101 161.3)
- #94547E
#94547E
oklch(53.4% 0.101 341.3)
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 #287F5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.040
- Jungle Green #048243 ΔE 0.040
- Dark Sage #598556 ΔE 0.050
- Viridian #1E9167 ΔE 0.053
- Bluegreen #017A79 ΔE 0.055
- Teal #008080 ΔE 0.057
- Dark Aquamarine #017371 ΔE 0.062
- Military Green #667C3E ΔE 0.063
Use #287F5A 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.