#303C8E#303C8E

#303C8E is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.6% C 0.136 H 272.4°. Best body text is #FFFFFF at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#303C8E
RGB	rgb(48, 60, 142)
HSL	hsl(232, 49%, 37%)
HSV	hsv(232, 66%, 56%)
CMYK	cmyk(66.2%, 57.7%, 0%, 44.3%)
CIE-LAB	lab(28.93, 22.81, -47.08)
CIE-LCH	lch(28.93, 52.32, 295.85°)
OKLab	oklab(39.62% 0.0056 -0.1354)
OKLCH	oklch(39.62% 0.136 272.4)
XYZ	xyz(7.7156, 5.8124, 26.3012)
Luminance	0.0581 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303C8E #8E8230

analogous

#306B8E #303C8E #53308E

triadic

#303C8E #8E303C #3C8E30

tetradic

#303C8E #8E306B #8E8230 #308E53

square

#303C8E #8E306B #8E8230 #308E53

split-complementary

#303C8E #8E5330 #6B8E30

monochromatic

#111533 #212960 #303C8E #3F4FBC #6B78CD

Accessibility & contrast

On white

9.71

#303C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#303C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303C8E

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303C8E	#FFFFFF	#000000	##FFFFFF
##303C8E	1.00	9.71	2.16	9.71
#FFFFFF	9.71	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004991

Deuteranopia (green-blind)

#00408C

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #303c8e;
/* rgb */ color: rgb(48, 60, 142);
/* oklch */ color: oklch(39.6% 0.136 272.4);

Tailwind

colors: {
  custom: {
    50: '#7371b0',
    500: '#303c8e',
    950: '#000000',
  },
}

SCSS

$custom: #303c8e;
$custom-light: #7371b0;
$custom-dark: #000000;

JSON

{
  "hex": "#303c8e",
  "rgb": {
    "r": 48,
    "g": 60,
    "b": 142
  },
  "hsl": {
    "h": 232.34,
    "s": 49.474,
    "l": 37.255
  },
  "oklch": {
    "l": 0.39622,
    "c": 0.13551,
    "h": 272.4
  },
  "luminance": 0.05813
}

Semantic roles & 50–950 ramp

primary

#303C8E

secondary

#B4AA65

accent

#C74FD9

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #303C8E

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

Preview Lab → · Contrast checker → · Palette generator →