#27378B#27378B

#27378B is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.8% C 0.140 H 270.1°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#27378B
RGB	rgb(39, 55, 139)
HSL	hsl(230, 56%, 35%)
HSV	hsv(230, 72%, 55%)
CMYK	cmyk(71.9%, 60.4%, 0%, 45.5%)
CIE-LAB	lab(26.81, 23.66, -48.70)
CIE-LCH	lch(26.81, 54.15, 295.91°)
OKLab	oklab(37.82% 0.0002 -0.1404)
OKLCH	oklch(37.82% 0.14 270.1)
XYZ	xyz(6.8615, 5.0271, 25.0298)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#27378B #8B7B27

analogous

#27698B #27378B #49278B

triadic

#27378B #8B2737 #378B27

tetradic

#27378B #8B2769 #8B7B27 #278B49

square

#27378B #8B2769 #8B7B27 #278B49

split-complementary

#27378B #8B4927 #698B27

monochromatic

#0C112B #1A245B #27378B #344ABB #5B6ED1

Accessibility & contrast

On white

10.47

#27378B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#27378B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #27378B

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##27378B	#FFFFFF	#000000	##FFFFFF
##27378B	1.00	10.47	2.01	10.47
#FFFFFF	10.47	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448E

Deuteranopia (green-blind)

#003B89

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #27378b;
/* rgb */ color: rgb(39, 55, 139);
/* oklch */ color: oklch(37.8% 0.140 270.1);

Tailwind

colors: {
  custom: {
    50: '#6f6dae',
    500: '#27378b',
    950: '#000000',
  },
}

SCSS

$custom: #27378b;
$custom-light: #6f6dae;
$custom-dark: #000000;

JSON

{
  "hex": "#27378b",
  "rgb": {
    "r": 39,
    "g": 55,
    "b": 139
  },
  "hsl": {
    "h": 230.4,
    "s": 56.18,
    "l": 34.902
  },
  "oklch": {
    "l": 0.37821,
    "c": 0.14043,
    "h": 270.1
  },
  "luminance": 0.05028
}

Semantic roles & 50–950 ramp

primary

#27378B

secondary

#B6A758

accent

#C748DF

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #27378B

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

Preview Lab → · Contrast checker → · Palette generator →