#103F81#103F81

#103F81 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 37.8% C 0.122 H 258.2°. Best body text is #FFFFFF at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#103F81
RGB	rgb(16, 63, 129)
HSL	hsl(215, 78%, 28%)
HSV	hsv(215, 88%, 51%)
CMYK	cmyk(87.6%, 51.2%, 0%, 49.4%)
CIE-LAB	lab(27.43, 11.34, -41.51)
CIE-LCH	lch(27.43, 43.03, 285.28°)
OKLab	oklab(37.8% -0.025 -0.1195)
OKLCH	oklch(37.8% 0.122 258.2)
XYZ	xyz(5.9522, 5.2494, 21.4641)
Luminance	0.0525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103F81 #815210

analogous

#107781 #103F81 #191081

triadic

#103F81 #81103F #3F8110

tetradic

#103F81 #811077 #815210 #108119

square

#103F81 #811077 #815210 #108119

split-complementary

#103F81 #811910 #778110

monochromatic

#030D1B #09244B #103F81 #175AB7 #2776E4

Accessibility & contrast

On white

10.24

#103F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#103F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103F81

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103F81	#FFFFFF	#000000	##FFFFFF
##103F81	1.00	10.24	2.05	10.24
#FFFFFF	10.24	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#164683

Deuteranopia (green-blind)

#003C80

Tritanopia (blue-blind)

#004F5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #103f81;
/* rgb */ color: rgb(16, 63, 129);
/* oklch */ color: oklch(37.8% 0.122 258.2);

Tailwind

colors: {
  custom: {
    50: '#6573a6',
    500: '#103f81',
    950: '#000000',
  },
}

SCSS

$custom: #103f81;
$custom-light: #6573a6;
$custom-dark: #000000;

JSON

{
  "hex": "#103f81",
  "rgb": {
    "r": 16,
    "g": 63,
    "b": 129
  },
  "hsl": {
    "h": 215.044,
    "s": 77.931,
    "l": 28.431
  },
  "oklch": {
    "l": 0.37795,
    "c": 0.12212,
    "h": 258.2
  },
  "luminance": 0.0525
}

Semantic roles & 50–950 ramp

primary

#103F81

secondary

#B78136

accent

#A433F4

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #103F81

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

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