#287457
Closest named color: Dark Aquamarine (#017371). oklch(50.4% 0.088 164.4), rgb(40, 116, 87).
Aa
White text reads best on this color (5.63:1).
About this color
#287457 is a medium-dark, moderately saturated green. In OKLCH its lightness is 50%, its chroma 0.088 and its hue 164°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.043 away. White text reads best on it, at 5.63:1.
| Hue family | Greens |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.088) |
| Temperature | in between |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.72:1 |
| White text | 5.63:1 |
Values
| HEX | #287457 |
| RGB | rgb(40, 116, 87) |
| HSL | hsl(157, 49%, 31%) |
| OKLCH | oklch(50.4% 0.088 164.4) |
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 #287457 | 5.63:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #287457 | 3.72:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #287457 text on white | 5.63:1 | AA | Lc 77.9 | Fine for body text |
| #287457 text on black | 3.72:1 | AA large text | Lc -23.9 | 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 700.
-
Step 50
50
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E3EDE8
oklch(93.7% 0.013 164.8)
-
Step 200
200
#CCDED5
oklch(88.5% 0.023 164.5)
-
Step 300
300
#A8CAB9
oklch(80.9% 0.043 163.6)
-
Step 400
400
#78AE96
oklch(70.6% 0.067 165.1)
-
Step 500
500
#529A7C
oklch(63% 0.087 164.8)
-
Step 600
600
#328565
oklch(55.7% 0.095 164.5)
-
Step 700
700 (this color)
#287457
oklch(50.4% 0.088 164.4)
-
Step 800
800
#205B44
oklch(42.6% 0.073 164.3)
-
Step 900
900
#204B3A
oklch(37.7% 0.057 165.2)
-
Step 950
950
#142C22
oklch(27% 0.036 165)
#287457 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) | #726C55 | 0.087 |
| Deuteranopia (no green cones) | #676459 | 0.084 |
| Tritanopia (no blue cones) | #00746C | 0.034 |
| Achromatopsia (no color) | #676767 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #287457
#287457
oklch(50.4% 0.088 164.4)
- #884F70
#884F70
oklch(50.5% 0.088 345)
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 #287457, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.043
- Deep Turquoise #017374 ΔE 0.047
- Bluegreen #017A79 ΔE 0.050
- Dark Green Blue #1F6357 ΔE 0.057
- Dark Aqua #05696B ΔE 0.057
- Dark Olive Green #556B2F ΔE 0.059
- Deep Aqua #08787F ΔE 0.060
- Jungle Green #048243 ΔE 0.061
Use #287457 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.