#307E9B#307E9B

#307E9B is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.8% C 0.087 H 226.3°. Best body text is #000000 at 4.58:1 contrast (WCAG AA passes).

Color values

HEX	#307E9B
RGB	rgb(48, 126, 155)
HSL	hsl(196, 53%, 40%)
HSV	hsv(196, 69%, 61%)
CMYK	cmyk(69%, 18.7%, 0%, 39.2%)
CIE-LAB	lab(49.39, -14.13, -22.53)
CIE-LCH	lch(49.39, 26.59, 237.91°)
OKLab	oklab(55.79% -0.0602 -0.063)
OKLCH	oklch(55.79% 0.087 226.3)
XYZ	xyz(14.5938, 17.9150, 33.6928)
Luminance	0.1792 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307E9B #9B4D30

analogous

#309B83 #307E9B #30489B

triadic

#307E9B #9B307E #7E9B30

tetradic

#307E9B #83309B #9B4D30 #489B30

square

#307E9B #83309B #9B4D30 #489B30

split-complementary

#307E9B #9B3048 #9B8330

monochromatic

#13323E #22586C #307E9B #43A2C5 #72B9D3

Accessibility & contrast

On white

4.58

#307E9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#307E9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307E9B

4.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307E9B	#FFFFFF	#000000	##000000
##307E9B	1.00	4.58	4.58	4.58
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.58	21.00	1.00	1.00
##000000	4.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7C9C

Deuteranopia (green-blind)

#5F719B

Tritanopia (blue-blind)

#008687

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #307e9b;
/* rgb */ color: rgb(48, 126, 155);
/* oklch */ color: oklch(55.8% 0.087 226.3);

Tailwind

colors: {
  custom: {
    50: '#76a3b8',
    500: '#307e9b',
    950: '#000000',
  },
}

SCSS

$custom: #307e9b;
$custom-light: #76a3b8;
$custom-dark: #000000;

JSON

{
  "hex": "#307e9b",
  "rgb": {
    "r": 48,
    "g": 126,
    "b": 155
  },
  "hsl": {
    "h": 196.262,
    "s": 52.709,
    "l": 39.804
  },
  "oklch": {
    "l": 0.55787,
    "c": 0.08714,
    "h": 226.3
  },
  "luminance": 0.17917
}

Semantic roles & 50–950 ramp

primary

#307E9B

secondary

#BB816C

accent

#734CDC

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #307E9B

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

Preview Lab → · Contrast checker → · Palette generator →