#307BAA#307BAA

#307BAA is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.8% C 0.103 H 240.0°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#307BAA
RGB	rgb(48, 123, 170)
HSL	hsl(203, 56%, 43%)
HSV	hsv(203, 72%, 67%)
CMYK	cmyk(71.8%, 27.6%, 0%, 33.3%)
CIE-LAB	lab(49.12, -7.21, -31.69)
CIE-LCH	lch(49.12, 32.50, 257.18°)
OKLab	oklab(55.79% -0.0516 -0.0894)
OKLCH	oklch(55.79% 0.103 240)
XYZ	xyz(15.5548, 17.6948, 40.6181)
Luminance	0.1770 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307BAA #AA5F30

analogous

#30AA9C #307BAA #303EAA

triadic

#307BAA #AA307B #7BAA30

tetradic

#307BAA #9C30AA #AA5F30 #3EAA30

square

#307BAA #9C30AA #AA5F30 #3EAA30

split-complementary

#307BAA #AA303E #AA9C30

monochromatic

#15364B #23587A #307BAA #4B9ACC #7BB5DA

Accessibility & contrast

On white

4.63

#307BAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#307BAA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #307BAA

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307BAA	#FFFFFF	#000000	##FFFFFF
##307BAA	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#657BAC

Deuteranopia (green-blind)

#5470A9

Tritanopia (blue-blind)

#00878B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #307baa;
/* rgb */ color: rgb(48, 123, 170);
/* oklch */ color: oklch(55.8% 0.103 240.0);

Tailwind

colors: {
  custom: {
    50: '#78a1c3',
    500: '#307baa',
    950: '#000000',
  },
}

SCSS

$custom: #307baa;
$custom-light: #78a1c3;
$custom-dark: #000000;

JSON

{
  "hex": "#307baa",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 170
  },
  "hsl": {
    "h": 203.115,
    "s": 55.963,
    "l": 42.745
  },
  "oklch": {
    "l": 0.55788,
    "c": 0.10325,
    "h": 240
  },
  "luminance": 0.17697
}

Semantic roles & 50–950 ramp

primary

#307BAA

secondary

#C29274

accent

#8349DF

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #307BAA

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

Preview Lab → · Contrast checker → · Palette generator →