#257356
Closest named color: Dark Aquamarine (#017371). oklch(50% 0.089 164.7), rgb(37, 115, 86).
Aa
White text reads best on this color (5.72:1).
About this color
#257356 is a medium-dark, moderately saturated green. In OKLCH its lightness is 50%, its chroma 0.089 and its hue 165°. 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 5.72:1.
| Hue family | Greens |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.66:1 |
| White text | 5.72:1 |
Values
| HEX | #257356 |
| RGB | rgb(37, 115, 86) |
| HSL | hsl(158, 51%, 30%) |
| OKLCH | oklch(50% 0.089 164.7) |
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 #257356 | 5.72:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #257356 | 3.66:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #257356 text on white | 5.72:1 | AA | Lc 78.4 | Fine for body text |
| #257356 text on black | 3.66:1 | AA large text | Lc -23.4 | 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
#CBDED5
oklch(88.4% 0.024 165.8)
-
Step 300
300
#A8CAB9
oklch(80.9% 0.043 163.6)
-
Step 400
400
#77AF96
oklch(70.8% 0.069 164.9)
-
Step 500
500
#519A7C
oklch(63% 0.087 165)
-
Step 600
600
#318565
oklch(55.7% 0.096 164.7)
-
Step 700
700 (this color)
#257356
oklch(50% 0.089 164.7)
-
Step 800
800
#1F5C44
oklch(42.8% 0.075 163.9)
-
Step 900
900
#204B3A
oklch(37.7% 0.057 165.2)
-
Step 950
950
#142C22
oklch(27% 0.036 165)
#257356 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) | #716B54 | 0.088 |
| Deuteranopia (no green cones) | #666358 | 0.085 |
| Tritanopia (no blue cones) | #00736B | 0.033 |
| Achromatopsia (no color) | #666666 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257356
#257356
oklch(50% 0.089 164.7)
- #874D6F
#874D6F
oklch(49.9% 0.09 344.8)
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 #257356, 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 0.051
- Dark Green Blue #1F6357 ΔE 0.054
- Dark Aqua #05696B ΔE 0.055
- Dark Olive Green #556B2F ΔE 0.059
- Deep Aqua #08787F ΔE 0.061
- Jungle Green #048243 ΔE 0.062
Use #257356 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.