#257263
Closest named color: Dark Aquamarine (#017371). oklch(50.1% 0.078 177.5), rgb(37, 114, 99).
Aa
White text reads best on this color (5.72:1).
About this color
#257263 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 50%, its chroma 0.078 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.023 away. White text reads best on it, at 5.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.66:1 |
| White text | 5.72:1 |
Values
| HEX | #257263 |
| RGB | rgb(37, 114, 99) |
| HSL | hsl(168, 51%, 30%) |
| OKLCH | oklch(50.1% 0.078 177.5) |
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 #257263 | 5.72:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #257263 | 3.66:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #257263 text on white | 5.72:1 | AA | Lc 78.4 | Fine for body text |
| #257263 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CBDED9
oklch(88.5% 0.021 178.3)
-
Step 300
300
#A8C9C0
oklch(80.9% 0.038 177)
-
Step 400
400
#77ADA0
oklch(70.6% 0.06 177.8)
-
Step 500
500
#519989
oklch(63.1% 0.077 177.5)
-
Step 600
600
#308373
oklch(55.5% 0.084 178)
-
Step 700
700 (this color)
#257263
oklch(50.1% 0.078 177.5)
-
Step 800
800
#1E5B4F
oklch(42.8% 0.065 177.6)
-
Step 900
900
#204A41
oklch(37.6% 0.05 177.5)
-
Step 950
950
#142C26
oklch(27.1% 0.032 175.7)
#257263 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) | #6D6B62 | 0.081 |
| Deuteranopia (no green cones) | #626364 | 0.078 |
| Tritanopia (no blue cones) | #00746D | 0.017 |
| Achromatopsia (no color) | #666666 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257263
#257263
oklch(50.1% 0.078 177.5)
- #875064
#875064
oklch(50.1% 0.078 357)
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 #257263, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.023
- Deep Turquoise #017374 ΔE 0.027
- Bluegreen #017A79 ΔE 0.035
- Dark Aqua #05696B ΔE 0.039
- Deep Aqua #08787F ΔE 0.042
- Dark Green Blue #1F6357 ΔE 0.048
- Teal #008080 ΔE 0.051
- Slate #516572 ΔE 0.068
Use #257263 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.