#257E97
Closest named color: Ocean (#017B92). oklch(55.3% 0.089 220.9), rgb(37, 126, 151).
Aa
White text reads best on this color (4.65:1).
About this color
#257E97 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.089 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.018 away. White text reads best on it, at 4.65:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.50:1 |
| White text | 4.65:1 |
Values
| HEX | #257E97 |
| RGB | rgb(37, 126, 151) |
| HSL | hsl(193, 61%, 37%) |
| OKLCH | oklch(55.3% 0.089 220.9) |
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 #257E97 | 4.65:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #257E97 | 4.50:1 | AA | Lc 32.1 | Non-text elements, placeholder text |
| #257E97 text on white | 4.65:1 | AA | Lc 72.0 | Content text, not long reading |
| #257E97 text on black | 4.50:1 | AA | Lc -29.7 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CADDE4
oklch(88.5% 0.023 221.8)
-
Step 300
300
#A5C7D3
oklch(80.9% 0.04 221.2)
-
Step 400
400
#73AABD
oklch(70.7% 0.064 221.6)
-
Step 500
500
#4A95AC
oklch(63.1% 0.082 220.5)
-
Step 600
600 (this color)
#257E97
oklch(55.3% 0.089 220.9)
-
Step 700
700
#176B82
oklch(49.1% 0.083 221.3)
-
Step 800
800
#175769
oklch(42.6% 0.069 220.9)
-
Step 900
900
#1B4856
oklch(37.7% 0.054 221.6)
-
Step 950
950
#112A32
oklch(26.9% 0.034 221.3)
#257E97 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) | #6F7B98 | 0.073 |
| Deuteranopia (no green cones) | #606F97 | 0.066 |
| Tritanopia (no blue cones) | #008686 | 0.043 |
| Achromatopsia (no color) | #747474 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257E97
#257E97
oklch(55.3% 0.089 220.9)
- #9E6049
#9E6049
oklch(55.3% 0.088 41)
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 #257E97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.018
- Cerulean #457B9D ΔE 0.028
- Teal Blue #01889F ΔE 0.029
- Sea Blue #047495 ΔE 0.034
- Stormy Blue #507B9C ΔE 0.037
- Dull Blue #49759C ΔE 0.039
- Metallic Blue #4F738E ΔE 0.042
- Deep Aqua #08787F ΔE 0.042
Use #257E97 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.