#258DB4#258DB4

#258DB4 is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.4% C 0.107 H 228.5°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#258DB4
RGB	rgb(37, 141, 180)
HSL	hsl(196, 66%, 43%)
HSV	hsv(196, 79%, 71%)
CMYK	cmyk(79.4%, 21.7%, 0%, 29.4%)
CIE-LAB	lab(54.80, -15.29, -28.63)
CIE-LCH	lch(54.80, 32.46, 241.91°)
OKLab	oklab(60.38% -0.0711 -0.0805)
OKLCH	oklch(60.38% 0.107 228.5)
XYZ	xyz(18.5227, 22.7361, 46.5834)
Luminance	0.2274 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#258DB4 #B44C25

analogous

#25B494 #258DB4 #2545B4

triadic

#258DB4 #B4258D #8DB425

tetradic

#258DB4 #9425B4 #B44C25 #45B425

square

#258DB4 #9425B4 #B44C25 #45B425

split-complementary

#258DB4 #B42545 #B49425

monochromatic

#103D4E #1B6581 #258DB4 #3FAED7 #71C3E2

Accessibility & contrast

On white

3.79

#258DB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#258DB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #258DB4

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##258DB4	#FFFFFF	#000000	##000000
##258DB4	1.00	3.79	5.55	5.55
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#798BB6

Deuteranopia (green-blind)

#667DB3

Tritanopia (blue-blind)

#00989A

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #258db4;
/* rgb */ color: rgb(37, 141, 180);
/* oklch */ color: oklch(60.4% 0.107 228.5);

Tailwind

colors: {
  custom: {
    50: '#77aeca',
    500: '#258db4',
    950: '#000000',
  },
}

SCSS

$custom: #258db4;
$custom-light: #77aeca;
$custom-dark: #000000;

JSON

{
  "hex": "#258db4",
  "rgb": {
    "r": 37,
    "g": 141,
    "b": 180
  },
  "hsl": {
    "h": 196.364,
    "s": 65.899,
    "l": 42.549
  },
  "oklch": {
    "l": 0.60379,
    "c": 0.10742,
    "h": 228.5
  },
  "luminance": 0.22738
}

Semantic roles & 50–950 ramp

primary

#258DB4

secondary

#C9856C

accent

#6D3FE9

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #258DB4

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

Preview Lab → · Contrast checker → · Palette generator →