#307AB8#307AB8

#307AB8 is a mid, vivid cyan. Relative luminance 0.180; OKLCH L 56.3% C 0.121 H 247.4°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#307AB8
RGB	rgb(48, 122, 184)
HSL	hsl(207, 59%, 45%)
HSV	hsv(207, 74%, 72%)
CMYK	cmyk(73.9%, 33.7%, 0%, 27.8%)
CIE-LAB	lab(49.50, -1.59, -39.20)
CIE-LCH	lch(49.50, 39.23, 267.68°)
OKLab	oklab(56.31% -0.0463 -0.1113)
OKLCH	oklch(56.31% 0.121 247.4)
XYZ	xyz(16.8269, 18.0062, 47.9268)
Luminance	0.1801 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307AB8 #B86E30

analogous

#30B8B2 #307AB8 #3036B8

triadic

#307AB8 #B8307A #7AB830

tetradic

#307AB8 #B230B8 #B86E30 #36B830

square

#307AB8 #B230B8 #B86E30 #36B830

split-complementary

#307AB8 #B83036 #B8B230

monochromatic

#173A57 #235A87 #307AB8 #5398D2 #84B5DF

Accessibility & contrast

On white

4.56

#307AB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#307AB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307AB8

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307AB8	#FFFFFF	#000000	##000000
##307AB8	1.00	4.56	4.60	4.60
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7DBB

Deuteranopia (green-blind)

#4A70B7

Tritanopia (blue-blind)

#008990

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #307ab8;
/* rgb */ color: rgb(48, 122, 184);
/* oklch */ color: oklch(56.3% 0.121 247.4);

Tailwind

colors: {
  custom: {
    50: '#7aa0cd',
    500: '#307ab8',
    950: '#000000',
  },
}

SCSS

$custom: #307ab8;
$custom-light: #7aa0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#307ab8",
  "rgb": {
    "r": 48,
    "g": 122,
    "b": 184
  },
  "hsl": {
    "h": 207.353,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.56312,
    "c": 0.12053,
    "h": 247.4
  },
  "luminance": 0.18008
}

Semantic roles & 50–950 ramp

primary

#307AB8

secondary

#C89F7C

accent

#8D46E2

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #307AB8

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

Preview Lab → · Contrast checker → · Palette generator →