#257AC5#257AC5

#257AC5 is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 56.8% C 0.140 H 249.8°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#257AC5
RGB	rgb(37, 122, 197)
HSL	hsl(208, 68%, 46%)
HSV	hsv(208, 81%, 77%)
CMYK	cmyk(81.2%, 38.1%, 0%, 22.7%)
CIE-LAB	lab(49.91, 1.96, -46.05)
CIE-LCH	lch(49.91, 46.09, 272.44°)
OKLab	oklab(56.77% -0.0485 -0.1314)
OKLCH	oklch(56.77% 0.14 249.8)
XYZ	xyz(17.7967, 18.3414, 55.4148)
Luminance	0.1834 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257AC5 #C57025

analogous

#25C5C0 #257AC5 #252AC5

triadic

#257AC5 #C5257A #7AC525

tetradic

#257AC5 #C025C5 #C57025 #2AC525

square

#257AC5 #C025C5 #C57025 #2AC525

split-complementary

#257AC5 #C5252A #C5C025

monochromatic

#123A5E #1B5A91 #257AC5 #4A98DD #7EB5E7

Accessibility & contrast

On white

4.50

#257AC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#257AC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257AC5

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257AC5	#FFFFFF	#000000	##000000
##257AC5	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#567FC8

Deuteranopia (green-blind)

#3D70C4

Tritanopia (blue-blind)

#008C96

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #257ac5;
/* rgb */ color: rgb(37, 122, 197);
/* oklch */ color: oklch(56.8% 0.140 249.8);

Tailwind

colors: {
  custom: {
    50: '#79a0d7',
    500: '#257ac5',
    950: '#000000',
  },
}

SCSS

$custom: #257ac5;
$custom-light: #79a0d7;
$custom-dark: #000000;

JSON

{
  "hex": "#257ac5",
  "rgb": {
    "r": 37,
    "g": 122,
    "b": 197
  },
  "hsl": {
    "h": 208.125,
    "s": 68.376,
    "l": 45.882
  },
  "oklch": {
    "l": 0.56773,
    "c": 0.14009,
    "h": 249.8
  },
  "luminance": 0.18344
}

Semantic roles & 50–950 ramp

primary

#257AC5

secondary

#CFA077

accent

#8E3DEB

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #257AC5

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →