#307EB1#307EB1

#307EB1 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 56.9% C 0.109 H 241.3°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#307EB1
RGB	rgb(48, 126, 177)
HSL	hsl(204, 57%, 44%)
HSV	hsv(204, 73%, 69%)
CMYK	cmyk(72.9%, 28.8%, 0%, 30.6%)
CIE-LAB	lab(50.36, -6.48, -33.81)
CIE-LCH	lch(50.36, 34.43, 259.15°)
OKLab	oklab(56.88% -0.0523 -0.0955)
OKLCH	oklch(56.88% 0.109 241.3)
XYZ	xyz(16.6125, 18.7225, 44.3247)
Luminance	0.1872 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307EB1 #B16330

analogous

#30B1A4 #307EB1 #303EB1

triadic

#307EB1 #B1307E #7EB130

tetradic

#307EB1 #A430B1 #B16330 #3EB130

square

#307EB1 #A430B1 #B16330 #3EB130

split-complementary

#307EB1 #B1303E #B1A430

monochromatic

#163951 #235C81 #307EB1 #4F9DCF #7FB7DC

Accessibility & contrast

On white

4.43

#307EB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#307EB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307EB1

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307EB1	#FFFFFF	#000000	##000000
##307EB1	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667FB3

Deuteranopia (green-blind)

#5572B0

Tritanopia (blue-blind)

#008B90

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #307eb1;
/* rgb */ color: rgb(48, 126, 177);
/* oklch */ color: oklch(56.9% 0.109 241.3);

Tailwind

colors: {
  custom: {
    50: '#79a3c8',
    500: '#307eb1',
    950: '#000000',
  },
}

SCSS

$custom: #307eb1;
$custom-light: #79a3c8;
$custom-dark: #000000;

JSON

{
  "hex": "#307eb1",
  "rgb": {
    "r": 48,
    "g": 126,
    "b": 177
  },
  "hsl": {
    "h": 203.721,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.56876,
    "c": 0.10893,
    "h": 241.3
  },
  "luminance": 0.18724
}

Semantic roles & 50–950 ramp

primary

#307EB1

secondary

#C59678

accent

#8447E1

background

#F7FAFC

surface

#EEF3F8

border

#C9CDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #307EB1

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

Preview Lab → · Contrast checker → · Palette generator →