#103B81#103B81

#103B81 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.9% C 0.127 H 260.0°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX	#103B81
RGB	rgb(16, 59, 129)
HSL	hsl(217, 78%, 28%)
HSV	hsv(217, 88%, 51%)
CMYK	cmyk(87.6%, 54.3%, 0%, 49.4%)
CIE-LAB	lab(26.22, 14.16, -43.47)
CIE-LCH	lch(26.22, 45.72, 288.04°)
OKLab	oklab(36.87% -0.022 -0.1254)
OKLCH	oklch(36.87% 0.127 260)
XYZ	xyz(5.7387, 4.8223, 21.3930)
Luminance	0.0482 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103B81 #815610

analogous

#107381 #103B81 #1D1081

triadic

#103B81 #81103B #3B8110

tetradic

#103B81 #811073 #815610 #10811D

square

#103B81 #811073 #815610 #10811D

split-complementary

#103B81 #811D10 #738110

monochromatic

#030C1B #09224B #103B81 #1754B7 #276FE4

Accessibility & contrast

On white

10.69

#103B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#103B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103B81

10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103B81	#FFFFFF	#000000	##FFFFFF
##103B81	1.00	10.69	1.96	10.69
#FFFFFF	10.69	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#064383

Deuteranopia (green-blind)

#003980

Tritanopia (blue-blind)

#004C58

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #103b81;
/* rgb */ color: rgb(16, 59, 129);
/* oklch */ color: oklch(36.9% 0.127 260.0);

Tailwind

colors: {
  custom: {
    50: '#6570a6',
    500: '#103b81',
    950: '#000000',
  },
}

SCSS

$custom: #103b81;
$custom-light: #6570a6;
$custom-dark: #000000;

JSON

{
  "hex": "#103b81",
  "rgb": {
    "r": 16,
    "g": 59,
    "b": 129
  },
  "hsl": {
    "h": 217.168,
    "s": 77.931,
    "l": 28.431
  },
  "oklch": {
    "l": 0.36868,
    "c": 0.12732,
    "h": 260
  },
  "luminance": 0.04823
}

Semantic roles & 50–950 ramp

primary

#103B81

secondary

#B78636

accent

#AB33F4

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #103B81

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

Preview Lab → · Contrast checker → · Palette generator →