#28387F#28387F

#28387F is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.1% C 0.121 H 269.9°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#28387F
RGB	rgb(40, 56, 127)
HSL	hsl(229, 52%, 33%)
HSV	hsv(229, 69%, 50%)
CMYK	cmyk(68.5%, 55.9%, 0%, 50.2%)
CIE-LAB	lab(26.19, 18.54, -42.22)
CIE-LCH	lch(26.19, 46.11, 293.70°)
OKLab	oklab(37.07% -0.0001 -0.1213)
OKLCH	oklch(37.07% 0.121 269.9)
XYZ	xyz(6.1187, 4.8112, 20.6808)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28387F #7F6F28

analogous

#28637F #28387F #44287F

triadic

#28387F #7F2838 #387F28

tetradic

#28387F #7F2863 #7F6F28 #287F44

square

#28387F #7F2863 #7F6F28 #287F44

split-complementary

#28387F #7F4428 #637F28

monochromatic

#0B0F22 #192350 #28387F #374DAE #576CCA

Accessibility & contrast

On white

10.70

#28387F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#28387F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28387F

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28387F	#FFFFFF	#000000	##FFFFFF
##28387F	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#054281

Deuteranopia (green-blind)

#003A7E

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #28387f;
/* rgb */ color: rgb(40, 56, 127);
/* oklch */ color: oklch(37.1% 0.121 269.9);

Tailwind

colors: {
  custom: {
    50: '#6d6ea5',
    500: '#28387f',
    950: '#000000',
  },
}

SCSS

$custom: #28387f;
$custom-light: #6d6ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#28387f",
  "rgb": {
    "r": 40,
    "g": 56,
    "b": 127
  },
  "hsl": {
    "h": 228.966,
    "s": 52.096,
    "l": 32.745
  },
  "oklch": {
    "l": 0.3707,
    "c": 0.12134,
    "h": 269.9
  },
  "luminance": 0.04812
}

Semantic roles & 50–950 ramp

primary

#28387F

secondary

#AF9E54

accent

#C14CDC

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#08070F

muted

#7A7A7F

Preview Lab

Preview with #28387F

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

Preview Lab → · Contrast checker → · Palette generator →