#307DB5#307DB5

#307DB5 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.9% C 0.114 H 244.0°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#307DB5
RGB	rgb(48, 125, 181)
HSL	hsl(205, 58%, 45%)
HSV	hsv(205, 73%, 71%)
CMYK	cmyk(73.5%, 30.9%, 0%, 29%)
CIE-LAB	lab(50.25, -4.46, -36.29)
CIE-LCH	lch(50.25, 36.57, 262.99°)
OKLab	oklab(56.85% -0.0501 -0.1028)
OKLCH	oklch(56.85% 0.114 244)
XYZ	xyz(16.8898, 18.6299, 46.4129)
Luminance	0.1863 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307DB5 #B56830

analogous

#30B5AB #307DB5 #303BB5

triadic

#307DB5 #B5307D #7DB530

tetradic

#307DB5 #AB30B5 #B56830 #3BB530

square

#307DB5 #AB30B5 #B56830 #3BB530

split-complementary

#307DB5 #B5303B #B5AB30

monochromatic

#163A54 #235C85 #307DB5 #519BD1 #82B7DE

Accessibility & contrast

On white

4.44

#307DB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#307DB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307DB5

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307DB5	#FFFFFF	#000000	##000000
##307DB5	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637FB7

Deuteranopia (green-blind)

#5172B4

Tritanopia (blue-blind)

#008B91

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #307db5;
/* rgb */ color: rgb(48, 125, 181);
/* oklch */ color: oklch(56.9% 0.114 244.0);

Tailwind

colors: {
  custom: {
    50: '#7aa2cb',
    500: '#307db5',
    950: '#000000',
  },
}

SCSS

$custom: #307db5;
$custom-light: #7aa2cb;
$custom-dark: #000000;

JSON

{
  "hex": "#307db5",
  "rgb": {
    "r": 48,
    "g": 125,
    "b": 181
  },
  "hsl": {
    "h": 205.263,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.56852,
    "c": 0.11432,
    "h": 244
  },
  "luminance": 0.18632
}

Semantic roles & 50–950 ramp

primary

#307DB5

secondary

#C79A7A

accent

#8846E1

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #307DB5

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

Preview Lab → · Contrast checker → · Palette generator →