#257D63
Closest named color: Bluegreen (#017A79). oklch(53.1% 0.092 169.2), rgb(37, 125, 99).
Aa
White text reads best on this color (5.00:1).
About this color
#257D63 is a medium-dark, moderately saturated green. In OKLCH its lightness is 53%, its chroma 0.092 and its hue 169°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.039 away. White text reads best on it, at 5.00:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.092) |
| Temperature | in between |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.19:1 |
| White text | 5.00:1 |
Values
| HEX | #257D63 |
| RGB | rgb(37, 125, 99) |
| HSL | hsl(162, 54%, 32%) |
| OKLCH | oklch(53.1% 0.092 169.2) |
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 #257D63 | 5.00:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #257D63 | 4.19:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #257D63 text on white | 5.00:1 | AA | Lc 74.3 | Content text, not long reading |
| #257D63 text on black | 4.19:1 | AA large text | Lc -27.4 | 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 600.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3EDE8
oklch(93.7% 0.013 164.8)
-
Step 200
200
#CBDED6
oklch(88.4% 0.023 168.7)
-
Step 300
300
#A7CABC
oklch(80.9% 0.042 169)
-
Step 400
400
#76AE9A
oklch(70.6% 0.066 170)
-
Step 500
500
#4F9A81
oklch(63.1% 0.085 169.6)
-
Step 600
600 (this color)
#257D63
oklch(53.1% 0.092 169.2)
-
Step 700
700
#207058
oklch(49.1% 0.086 168.9)
-
Step 800
800
#1D5B48
oklch(42.6% 0.071 169.2)
-
Step 900
900
#1F4B3D
oklch(37.7% 0.055 169.9)
-
Step 950
950
#132C24
oklch(27% 0.035 170.7)
#257D63 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) | #7A7462 | 0.095 |
| Deuteranopia (no green cones) | #6E6C65 | 0.090 |
| Tritanopia (no blue cones) | #007E76 | 0.029 |
| Achromatopsia (no color) | #6F6F6F | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257D63
#257D63
oklch(53.1% 0.092 169.2)
- #935574
#935574
oklch(53.1% 0.091 349.3)
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 #257D63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.039
- Teal #008080 ΔE 0.043
- Dark Aquamarine #017371 ΔE 0.046
- Deep Turquoise #017374 ΔE 0.050
- Deep Aqua #08787F ΔE 0.052
- Sea Green #2E8B57 ΔE 0.053
- Jungle Green #048243 ΔE 0.055
- Dark Sage #598556 ΔE 0.058
Use #257D63 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.