#307EB0#307EB0

#307EB0 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 56.8% C 0.108 H 240.8°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#307EB0
RGB	rgb(48, 126, 176)
HSL	hsl(203, 57%, 44%)
HSV	hsv(203, 73%, 69%)
CMYK	cmyk(72.7%, 28.4%, 0%, 31%)
CIE-LAB	lab(50.31, -6.84, -33.31)
CIE-LCH	lch(50.31, 34.00, 258.40°)
OKLab	oklab(56.82% -0.0526 -0.0941)
OKLCH	oklch(56.82% 0.108 240.8)
XYZ	xyz(16.5132, 18.6828, 43.8017)
Luminance	0.1868 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307EB0 #B06230

analogous

#30B0A2 #307EB0 #303EB0

triadic

#307EB0 #B0307E #7EB030

tetradic

#307EB0 #A230B0 #B06230 #3EB030

square

#307EB0 #A230B0 #B06230 #3EB030

split-complementary

#307EB0 #B0303E #B0A230

monochromatic

#163950 #235C80 #307EB0 #4E9DCF #7EB7DC

Accessibility & contrast

On white

4.43

#307EB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#307EB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307EB0

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307EB0	#FFFFFF	#000000	##000000
##307EB0	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)

#677FB2

Deuteranopia (green-blind)

#5572AF

Tritanopia (blue-blind)

#008A8F

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #307eb0;
/* rgb */ color: rgb(48, 126, 176);
/* oklch */ color: oklch(56.8% 0.108 240.8);

Tailwind

colors: {
  custom: {
    50: '#79a3c8',
    500: '#307eb0',
    950: '#000000',
  },
}

SCSS

$custom: #307eb0;
$custom-light: #79a3c8;
$custom-dark: #000000;

JSON

{
  "hex": "#307eb0",
  "rgb": {
    "r": 48,
    "g": 126,
    "b": 176
  },
  "hsl": {
    "h": 203.438,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.56823,
    "c": 0.10781,
    "h": 240.8
  },
  "luminance": 0.18685
}

Semantic roles & 50–950 ramp

primary

#307EB0

secondary

#C59577

accent

#8347E0

background

#F7FAFC

surface

#EEF3F8

border

#C9CDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #307EB0

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

Preview Lab → · Contrast checker → · Palette generator →