#257758
Closest named color: Dark Aquamarine (#017371). oklch(51.1% 0.093 164.1), rgb(37, 119, 88).
Aa
White text reads best on this color (5.44:1).
About this color
#257758 is a medium-dark, moderately saturated green. In OKLCH its lightness is 51%, its chroma 0.093 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 0.046 away. White text reads best on it, at 5.44:1.
| Hue family | Greens |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.093) |
| Temperature | in between |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.85:1 |
| White text | 5.44:1 |
Values
| HEX | #257758 |
| RGB | rgb(37, 119, 88) |
| HSL | hsl(157, 53%, 31%) |
| OKLCH | oklch(51.1% 0.093 164.1) |
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 #257758 | 5.44:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #257758 | 3.85:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #257758 text on white | 5.44:1 | AA | Lc 76.9 | Fine for body text |
| #257758 text on black | 3.85:1 | AA large text | Lc -24.9 | 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
#E2EDE7
oklch(93.6% 0.014 162.5)
-
Step 200
200
#CBDFD5
oklch(88.6% 0.025 164.4)
-
Step 300
300
#A7CAB9
oklch(80.9% 0.044 164.3)
-
Step 400
400
#75AF95
oklch(70.6% 0.072 164.7)
-
Step 500
500
#4E9B7A
oklch(63.1% 0.092 163.7)
-
Step 600
600
#2C8563
oklch(55.5% 0.1 164)
-
Step 700
700 (this color)
#257758
oklch(51.1% 0.093 164.1)
-
Step 800
800
#1C5C44
oklch(42.7% 0.076 164.5)
-
Step 900
900
#1E4C39
oklch(37.8% 0.061 163.8)
-
Step 950
950
#132C21
oklch(26.9% 0.038 163.5)
#257758 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) | #756E56 | 0.092 |
| Deuteranopia (no green cones) | #6A665A | 0.089 |
| Tritanopia (no blue cones) | #00776E | 0.034 |
| Achromatopsia (no color) | #6A6A6A | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257758
#257758
oklch(51.1% 0.093 164.1)
- #8B5073
#8B5073
oklch(51.1% 0.091 344.4)
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 #257758, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.046
- Bluegreen #017A79 ΔE 0.049
- Deep Turquoise #017374 ΔE 0.050
- Jungle Green #048243 ΔE 0.053
- Teal #008080 ΔE 0.059
- Deep Aqua #08787F ΔE 0.060
- Dark Olive Green #556B2F ΔE 0.061
- Dark Aqua #05696B ΔE 0.064
Use #257758 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.