#304288#304288

#304288 is a dark, moderate blue. Relative luminance 0.063; OKLCH L 40.4% C 0.119 H 269.6°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#304288
RGB	rgb(48, 66, 136)
HSL	hsl(228, 48%, 36%)
HSV	hsv(228, 65%, 53%)
CMYK	cmyk(64.7%, 51.5%, 0%, 46.7%)
CIE-LAB	lab(30.16, 16.53, -41.40)
CIE-LCH	lch(30.16, 44.57, 291.76°)
OKLab	oklab(40.41% -0.0008 -0.1186)
OKLCH	oklch(40.41% 0.119 269.6)
XYZ	xyz(7.6096, 6.3017, 24.1031)
Luminance	0.0630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304288 #887630

analogous

#306E88 #304288 #4A3088

triadic

#304288 #883042 #428830

tetradic

#304288 #88306E #887630 #30884A

square

#304288 #88306E #887630 #30884A

split-complementary

#304288 #884A30 #6E8830

monochromatic

#10162E #202C5B #304288 #4058B5 #697CCA

Accessibility & contrast

On white

9.29

#304288 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#304288 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304288

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304288	#FFFFFF	#000000	##FFFFFF
##304288	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C4B8B

Deuteranopia (green-blind)

#054387

Tritanopia (blue-blind)

#00525E

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #304288;
/* rgb */ color: rgb(48, 66, 136);
/* oklch */ color: oklch(40.4% 0.119 269.6);

Tailwind

colors: {
  custom: {
    50: '#7276ab',
    500: '#304288',
    950: '#000000',
  },
}

SCSS

$custom: #304288;
$custom-light: #7276ab;
$custom-dark: #000000;

JSON

{
  "hex": "#304288",
  "rgb": {
    "r": 48,
    "g": 66,
    "b": 136
  },
  "hsl": {
    "h": 227.727,
    "s": 47.826,
    "l": 36.078
  },
  "oklch": {
    "l": 0.40406,
    "c": 0.11858,
    "h": 269.6
  },
  "luminance": 0.06302
}

Semantic roles & 50–950 ramp

primary

#304288

secondary

#B1A163

accent

#BC50D7

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #304288

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

Preview Lab → · Contrast checker → · Palette generator →