#307DB3#307DB3

#307DB3 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.7% C 0.112 H 243.1°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#307DB3
RGB	rgb(48, 125, 179)
HSL	hsl(205, 58%, 45%)
HSV	hsv(205, 73%, 70%)
CMYK	cmyk(73.2%, 30.2%, 0%, 29.8%)
CIE-LAB	lab(50.15, -5.18, -35.29)
CIE-LCH	lch(50.15, 35.67, 261.65°)
OKLab	oklab(56.74% -0.0507 -0.0998)
OKLCH	oklch(56.74% 0.112 243.1)
XYZ	xyz(16.6861, 18.5484, 45.3399)
Luminance	0.1855 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307DB3 #B36630

analogous

#30B3A8 #307DB3 #303CB3

triadic

#307DB3 #B3307D #7DB330

tetradic

#307DB3 #A830B3 #B36630 #3CB330

square

#307DB3 #A830B3 #B36630 #3CB330

split-complementary

#307DB3 #B3303C #B3A830

monochromatic

#163A52 #235B83 #307DB3 #509BD0 #80B7DD

Accessibility & contrast

On white

4.46

#307DB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#307DB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307DB3

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307DB3	#FFFFFF	#000000	##000000
##307DB3	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647EB5

Deuteranopia (green-blind)

#5272B2

Tritanopia (blue-blind)

#008A90

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #307db3;
/* rgb */ color: rgb(48, 125, 179);
/* oklch */ color: oklch(56.7% 0.112 243.1);

Tailwind

colors: {
  custom: {
    50: '#79a2ca',
    500: '#307db3',
    950: '#000000',
  },
}

SCSS

$custom: #307db3;
$custom-light: #79a2ca;
$custom-dark: #000000;

JSON

{
  "hex": "#307db3",
  "rgb": {
    "r": 48,
    "g": 125,
    "b": 179
  },
  "hsl": {
    "h": 204.733,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.56744,
    "c": 0.11198,
    "h": 243.1
  },
  "luminance": 0.1855
}

Semantic roles & 50–950 ramp

primary

#307DB3

secondary

#C69979

accent

#8647E1

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #307DB3

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

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