#257AA5#257AA5

#257AA5 is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 55.0% C 0.103 H 235.6°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#257AA5
RGB	rgb(37, 122, 165)
HSL	hsl(200, 63%, 40%)
HSV	hsv(200, 78%, 65%)
CMYK	cmyk(77.6%, 26.1%, 0%, 35.3%)
CIE-LAB	lab(48.29, -9.90, -30.10)
CIE-LCH	lch(48.29, 31.68, 251.80°)
OKLab	oklab(54.97% -0.0581 -0.0849)
OKLCH	oklch(54.97% 0.103 235.6)
XYZ	xyz(14.5113, 17.0273, 38.1118)
Luminance	0.1703 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257AA5 #A55025

analogous

#25A590 #257AA5 #253AA5

triadic

#257AA5 #A5257A #7AA525

tetradic

#257AA5 #9025A5 #A55025 #3AA525

square

#257AA5 #9025A5 #A55025 #3AA525

split-complementary

#257AA5 #A5253A #A59025

monochromatic

#0F3041 #1A5573 #257AA5 #359DD2 #67B5DD

Accessibility & contrast

On white

4.77

#257AA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#257AA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #257AA5

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257AA5	#FFFFFF	#000000	##FFFFFF
##257AA5	1.00	4.77	4.41	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6579A7

Deuteranopia (green-blind)

#546DA4

Tritanopia (blue-blind)

#008589

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #257aa5;
/* rgb */ color: rgb(37, 122, 165);
/* oklch */ color: oklch(55.0% 0.103 235.6);

Tailwind

colors: {
  custom: {
    50: '#73a0c0',
    500: '#257aa5',
    950: '#000000',
  },
}

SCSS

$custom: #257aa5;
$custom-light: #73a0c0;
$custom-dark: #000000;

JSON

{
  "hex": "#257aa5",
  "rgb": {
    "r": 37,
    "g": 122,
    "b": 165
  },
  "hsl": {
    "h": 200.156,
    "s": 63.366,
    "l": 39.608
  },
  "oklch": {
    "l": 0.5497,
    "c": 0.1029,
    "h": 235.6
  },
  "luminance": 0.17029
}

Semantic roles & 50–950 ramp

primary

#257AA5

secondary

#C38363

accent

#7941E6

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #257AA5

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

Preview Lab → · Contrast checker → · Palette generator →