#258CB3#258CB3

#258CB3 is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 60.1% C 0.107 H 228.8°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#258CB3
RGB	rgb(37, 140, 179)
HSL	hsl(196, 66%, 42%)
HSV	hsv(196, 79%, 70%)
CMYK	cmyk(79.3%, 21.8%, 0%, 29.8%)
CIE-LAB	lab(54.45, -15.08, -28.60)
CIE-LCH	lch(54.45, 32.34, 242.20°)
OKLab	oklab(60.09% -0.0705 -0.0804)
OKLCH	oklch(60.09% 0.107 228.8)
XYZ	xyz(18.2744, 22.4019, 45.9999)
Luminance	0.2240 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#258CB3 #B34C25

analogous

#25B393 #258CB3 #2545B3

triadic

#258CB3 #B3258C #8CB325

tetradic

#258CB3 #9325B3 #B34C25 #45B325

square

#258CB3 #9325B3 #B34C25 #45B325

split-complementary

#258CB3 #B32545 #B39325

monochromatic

#103D4E #1B6480 #258CB3 #3EADD7 #71C3E2

Accessibility & contrast

On white

3.83

#258CB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#258CB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #258CB3

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##258CB3	#FFFFFF	#000000	##000000
##258CB3	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#788AB5

Deuteranopia (green-blind)

#657CB2

Tritanopia (blue-blind)

#009799

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #258cb3;
/* rgb */ color: rgb(37, 140, 179);
/* oklch */ color: oklch(60.1% 0.107 228.8);

Tailwind

colors: {
  custom: {
    50: '#77adca',
    500: '#258cb3',
    950: '#000000',
  },
}

SCSS

$custom: #258cb3;
$custom-light: #77adca;
$custom-dark: #000000;

JSON

{
  "hex": "#258cb3",
  "rgb": {
    "r": 37,
    "g": 140,
    "b": 179
  },
  "hsl": {
    "h": 196.479,
    "s": 65.741,
    "l": 42.353
  },
  "oklch": {
    "l": 0.60086,
    "c": 0.10697,
    "h": 228.8
  },
  "luminance": 0.22404
}

Semantic roles & 50–950 ramp

primary

#258CB3

secondary

#C8856B

accent

#6E3FE9

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #258CB3

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

Preview Lab → · Contrast checker → · Palette generator →