#258AB3#258AB3

#258AB3 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.6% C 0.108 H 230.5°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#258AB3
RGB	rgb(37, 138, 179)
HSL	hsl(197, 66%, 42%)
HSV	hsv(197, 79%, 70%)
CMYK	cmyk(79.3%, 22.9%, 0%, 29.8%)
CIE-LAB	lab(53.84, -13.98, -29.55)
CIE-LCH	lch(53.84, 32.69, 244.69°)
OKLab	oklab(59.6% -0.0686 -0.0832)
OKLCH	oklch(59.6% 0.108 230.5)
XYZ	xyz(17.9848, 21.8227, 45.9034)
Luminance	0.2182 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#258AB3 #B34E25

analogous

#25B395 #258AB3 #2543B3

triadic

#258AB3 #B3258A #8AB325

tetradic

#258AB3 #9525B3 #B34E25 #43B325

square

#258AB3 #9525B3 #B34E25 #43B325

split-complementary

#258AB3 #B32543 #B39525

monochromatic

#103C4E #1B6380 #258AB3 #3EABD7 #71C1E2

Accessibility & contrast

On white

3.91

#258AB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#258AB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #258AB3

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##258AB3	#FFFFFF	#000000	##000000
##258AB3	1.00	3.91	5.36	5.36
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7588B5

Deuteranopia (green-blind)

#627BB2

Tritanopia (blue-blind)

#009598

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #258ab3;
/* rgb */ color: rgb(37, 138, 179);
/* oklch */ color: oklch(59.6% 0.108 230.5);

Tailwind

colors: {
  custom: {
    50: '#77acca',
    500: '#258ab3',
    950: '#000000',
  },
}

SCSS

$custom: #258ab3;
$custom-light: #77acca;
$custom-dark: #000000;

JSON

{
  "hex": "#258ab3",
  "rgb": {
    "r": 37,
    "g": 138,
    "b": 179
  },
  "hsl": {
    "h": 197.324,
    "s": 65.741,
    "l": 42.353
  },
  "oklch": {
    "l": 0.59597,
    "c": 0.10783,
    "h": 230.5
  },
  "luminance": 0.21825
}

Semantic roles & 50–950 ramp

primary

#258AB3

secondary

#C8866B

accent

#703FE9

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #258AB3

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

Preview Lab → · Contrast checker → · Palette generator →