#30639B#30639B

#30639B is a mid, moderate cyan. Relative luminance 0.119; OKLCH L 49.2% C 0.106 H 252.6°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#30639B
RGB	rgb(48, 99, 155)
HSL	hsl(211, 53%, 40%)
HSV	hsv(211, 69%, 61%)
CMYK	cmyk(69%, 36.1%, 0%, 39.2%)
CIE-LAB	lab(41.08, 1.92, -35.50)
CIE-LCH	lch(41.08, 35.56, 273.10°)
OKLab	oklab(49.21% -0.0315 -0.1008)
OKLCH	oklch(49.21% 0.106 252.6)
XYZ	xyz(11.5950, 11.9174, 32.6932)
Luminance	0.1192 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#30639B #9B6830

analogous

#30989B #30639B #33309B

triadic

#30639B #9B3063 #639B30

tetradic

#30639B #9B3098 #9B6830 #309B33

square

#30639B #9B3098 #9B6830 #309B33

split-complementary

#30639B #9B3330 #989B30

monochromatic

#13273E #22456C #30639B #4381C5 #72A0D3

Accessibility & contrast

On white

6.21

#30639B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#30639B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #30639B

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##30639B	#FFFFFF	#000000	##FFFFFF
##30639B	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A669D

Deuteranopia (green-blind)

#3B5C9A

Tritanopia (blue-blind)

#007077

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #30639b;
/* rgb */ color: rgb(48, 99, 155);
/* oklch */ color: oklch(49.2% 0.106 252.6);

Tailwind

colors: {
  custom: {
    50: '#758fb9',
    500: '#30639b',
    950: '#000000',
  },
}

SCSS

$custom: #30639b;
$custom-light: #758fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#30639b",
  "rgb": {
    "r": 48,
    "g": 99,
    "b": 155
  },
  "hsl": {
    "h": 211.402,
    "s": 52.709,
    "l": 39.804
  },
  "oklch": {
    "l": 0.49209,
    "c": 0.10562,
    "h": 252.6
  },
  "luminance": 0.11919
}

Semantic roles & 50–950 ramp

primary

#30639B

secondary

#BB956C

accent

#974CDC

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#090C11

muted

#7B7D80

Preview Lab

Preview with #30639B

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

Preview Lab → · Contrast checker → · Palette generator →