#307FB5#307FB5

#307FB5 is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.3% C 0.113 H 242.5°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#307FB5
RGB	rgb(48, 127, 181)
HSL	hsl(204, 58%, 45%)
HSV	hsv(204, 73%, 71%)
CMYK	cmyk(73.5%, 29.8%, 0%, 29%)
CIE-LAB	lab(50.85, -5.64, -35.35)
CIE-LCH	lch(50.85, 35.80, 260.93°)
OKLab	oklab(57.33% -0.052 -0.1)
OKLCH	oklch(57.33% 0.113 242.5)
XYZ	xyz(17.1456, 19.1414, 46.4981)
Luminance	0.1914 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307FB5 #B56630

analogous

#30B5A9 #307FB5 #303CB5

triadic

#307FB5 #B5307F #7FB530

tetradic

#307FB5 #A930B5 #B56630 #3CB530

square

#307FB5 #A930B5 #B56630 #3CB530

split-complementary

#307FB5 #B5303C #B5A930

monochromatic

#163B54 #235D85 #307FB5 #519DD1 #82B8DE

Accessibility & contrast

On white

4.35

#307FB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#307FB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307FB5

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307FB5	#FFFFFF	#000000	##000000
##307FB5	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6680B7

Deuteranopia (green-blind)

#5473B4

Tritanopia (blue-blind)

#008C92

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #307fb5;
/* rgb */ color: rgb(48, 127, 181);
/* oklch */ color: oklch(57.3% 0.113 242.5);

Tailwind

colors: {
  custom: {
    50: '#7aa3cb',
    500: '#307fb5',
    950: '#000000',
  },
}

SCSS

$custom: #307fb5;
$custom-light: #7aa3cb;
$custom-dark: #000000;

JSON

{
  "hex": "#307fb5",
  "rgb": {
    "r": 48,
    "g": 127,
    "b": 181
  },
  "hsl": {
    "h": 204.361,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.57327,
    "c": 0.11273,
    "h": 242.5
  },
  "luminance": 0.19143
}

Semantic roles & 50–950 ramp

primary

#307FB5

secondary

#C7997A

accent

#8546E1

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #307FB5

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

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