#258EB3#258EB3

#258EB3 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.6% C 0.106 H 227.0°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#258EB3
RGB	rgb(37, 142, 179)
HSL	hsl(196, 66%, 42%)
HSV	hsv(196, 79%, 70%)
CMYK	cmyk(79.3%, 20.7%, 0%, 29.8%)
CIE-LAB	lab(55.06, -16.18, -27.65)
CIE-LCH	lch(55.06, 32.04, 239.67°)
OKLab	oklab(60.58% -0.0724 -0.0777)
OKLCH	oklch(60.58% 0.106 227)
XYZ	xyz(18.5693, 22.9917, 46.0982)
Luminance	0.2299 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#258EB3 #B34A25

analogous

#25B391 #258EB3 #2547B3

triadic

#258EB3 #B3258E #8EB325

tetradic

#258EB3 #9125B3 #B34A25 #47B325

square

#258EB3 #9125B3 #B34A25 #47B325

split-complementary

#258EB3 #B32547 #B39125

monochromatic

#103E4E #1B6680 #258EB3 #3EAFD7 #71C4E2

Accessibility & contrast

On white

3.75

#258EB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#258EB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #258EB3

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##258EB3	#FFFFFF	#000000	##000000
##258EB3	1.00	3.75	5.60	5.60
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.60	21.00	1.00	1.00
##000000	5.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8BB5

Deuteranopia (green-blind)

#677EB3

Tritanopia (blue-blind)

#00999A

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #258eb3;
/* rgb */ color: rgb(37, 142, 179);
/* oklch */ color: oklch(60.6% 0.106 227.0);

Tailwind

colors: {
  custom: {
    50: '#77afca',
    500: '#258eb3',
    950: '#000000',
  },
}

SCSS

$custom: #258eb3;
$custom-light: #77afca;
$custom-dark: #000000;

JSON

{
  "hex": "#258eb3",
  "rgb": {
    "r": 37,
    "g": 142,
    "b": 179
  },
  "hsl": {
    "h": 195.634,
    "s": 65.741,
    "l": 42.353
  },
  "oklch": {
    "l": 0.60577,
    "c": 0.10622,
    "h": 227
  },
  "luminance": 0.22994
}

Semantic roles & 50–950 ramp

primary

#258EB3

secondary

#C8846B

accent

#6B3FE9

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #258EB3

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

Preview Lab → · Contrast checker → · Palette generator →