#258AB4#258AB4

#258AB4 is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.6% C 0.109 H 231.1°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#258AB4
RGB	rgb(37, 138, 180)
HSL	hsl(198, 66%, 43%)
HSV	hsv(198, 79%, 71%)
CMYK	cmyk(79.4%, 23.3%, 0%, 29.4%)
CIE-LAB	lab(53.88, -13.62, -30.06)
CIE-LCH	lch(53.88, 33.00, 245.62°)
OKLab	oklab(59.65% -0.0682 -0.0846)
OKLCH	oklch(59.65% 0.109 231.1)
XYZ	xyz(18.0863, 21.8633, 46.4380)
Luminance	0.2187 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#258AB4 #B44F25

analogous

#25B496 #258AB4 #2543B4

triadic

#258AB4 #B4258A #8AB425

tetradic

#258AB4 #9625B4 #B44F25 #43B425

square

#258AB4 #9625B4 #B44F25 #43B425

split-complementary

#258AB4 #B42543 #B49625

monochromatic

#103C4E #1B6381 #258AB4 #3FABD7 #71C1E2

Accessibility & contrast

On white

3.91

#258AB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#258AB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #258AB4

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##258AB4	#FFFFFF	#000000	##000000
##258AB4	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7588B6

Deuteranopia (green-blind)

#627BB3

Tritanopia (blue-blind)

#009598

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #258ab4;
/* rgb */ color: rgb(37, 138, 180);
/* oklch */ color: oklch(59.6% 0.109 231.1);

Tailwind

colors: {
  custom: {
    50: '#77acca',
    500: '#258ab4',
    950: '#000000',
  },
}

SCSS

$custom: #258ab4;
$custom-light: #77acca;
$custom-dark: #000000;

JSON

{
  "hex": "#258ab4",
  "rgb": {
    "r": 37,
    "g": 138,
    "b": 180
  },
  "hsl": {
    "h": 197.622,
    "s": 65.899,
    "l": 42.549
  },
  "oklch": {
    "l": 0.59646,
    "c": 0.10872,
    "h": 231.1
  },
  "luminance": 0.21866
}

Semantic roles & 50–950 ramp

primary

#258AB4

secondary

#C9876C

accent

#713FE9

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #258AB4

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

Preview Lab → · Contrast checker → · Palette generator →