#258AB2#258AB2

#258AB2 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.5% C 0.107 H 229.8°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#258AB2
RGB	rgb(37, 138, 178)
HSL	hsl(197, 66%, 42%)
HSV	hsv(197, 79%, 70%)
CMYK	cmyk(79.2%, 22.5%, 0%, 30.2%)
CIE-LAB	lab(53.80, -14.33, -29.05)
CIE-LCH	lch(53.80, 32.39, 243.74°)
OKLab	oklab(59.55% -0.069 -0.0817)
OKLCH	oklch(59.55% 0.107 229.8)
XYZ	xyz(17.8840, 21.7824, 45.3727)
Luminance	0.2178 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#258AB2 #B24D25

analogous

#25B293 #258AB2 #2544B2

triadic

#258AB2 #B2258A #8AB225

tetradic

#258AB2 #9325B2 #B24D25 #44B225

square

#258AB2 #9325B2 #B24D25 #44B225

split-complementary

#258AB2 #B22544 #B29325

monochromatic

#103B4D #1A637F #258AB2 #3DABD7 #70C1E1

Accessibility & contrast

On white

3.92

#258AB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#258AB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #258AB2

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##258AB2	#FFFFFF	#000000	##000000
##258AB2	1.00	3.92	5.36	5.36
#FFFFFF	3.92	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)

#7588B4

Deuteranopia (green-blind)

#637BB1

Tritanopia (blue-blind)

#009597

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #258ab2;
/* rgb */ color: rgb(37, 138, 178);
/* oklch */ color: oklch(59.5% 0.107 229.8);

Tailwind

colors: {
  custom: {
    50: '#76acc9',
    500: '#258ab2',
    950: '#000000',
  },
}

SCSS

$custom: #258ab2;
$custom-light: #76acc9;
$custom-dark: #000000;

JSON

{
  "hex": "#258ab2",
  "rgb": {
    "r": 37,
    "g": 138,
    "b": 178
  },
  "hsl": {
    "h": 197.021,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.59548,
    "c": 0.10694,
    "h": 229.8
  },
  "luminance": 0.21785
}

Semantic roles & 50–950 ramp

primary

#258AB2

secondary

#C8856B

accent

#6F3FE9

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #258AB2

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

Preview Lab → · Contrast checker → · Palette generator →