#258BB1#258BB1

#258BB1 is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 59.7% C 0.106 H 228.3°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#258BB1
RGB	rgb(37, 139, 177)
HSL	hsl(196, 65%, 42%)
HSV	hsv(196, 79%, 69%)
CMYK	cmyk(79.1%, 21.5%, 0%, 30.6%)
CIE-LAB	lab(54.06, -15.23, -28.07)
CIE-LCH	lch(54.06, 31.93, 241.51°)
OKLab	oklab(59.75% -0.0703 -0.0789)
OKLCH	oklch(59.75% 0.106 228.3)
XYZ	xyz(17.9281, 22.0307, 44.8939)
Luminance	0.2203 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#258BB1 #B14B25

analogous

#25B191 #258BB1 #2545B1

triadic

#258BB1 #B1258B #8BB125

tetradic

#258BB1 #9125B1 #B14B25 #45B125

square

#258BB1 #9125B1 #B14B25 #45B125

split-complementary

#258BB1 #B12545 #B19125

monochromatic

#103B4C #1A637E #258BB1 #3DADD6 #6FC2E1

Accessibility & contrast

On white

3.88

#258BB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#258BB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #258BB1

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##258BB1	#FFFFFF	#000000	##000000
##258BB1	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7789B3

Deuteranopia (green-blind)

#647BB0

Tritanopia (blue-blind)

#009698

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #258bb1;
/* rgb */ color: rgb(37, 139, 177);
/* oklch */ color: oklch(59.7% 0.106 228.3);

Tailwind

colors: {
  custom: {
    50: '#76adc8',
    500: '#258bb1',
    950: '#000000',
  },
}

SCSS

$custom: #258bb1;
$custom-light: #76adc8;
$custom-dark: #000000;

JSON

{
  "hex": "#258bb1",
  "rgb": {
    "r": 37,
    "g": 139,
    "b": 177
  },
  "hsl": {
    "h": 196.286,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.59745,
    "c": 0.10567,
    "h": 228.3
  },
  "luminance": 0.22033
}

Semantic roles & 50–950 ramp

primary

#258BB1

secondary

#C8846A

accent

#6D3FE8

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #258BB1

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

Preview Lab → · Contrast checker → · Palette generator →