#10317F#10317F

#10317F is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.5% C 0.138 H 263.5°. Best body text is #FFFFFF at 11.88:1 contrast (WCAG AA passes).

Color values

HEX	#10317F
RGB	rgb(16, 49, 127)
HSL	hsl(222, 78%, 28%)
HSV	hsv(222, 87%, 50%)
CMYK	cmyk(87.4%, 61.4%, 0%, 50.2%)
CIE-LAB	lab(23.13, 20.43, -47.25)
CIE-LCH	lch(23.13, 51.48, 293.39°)
OKLab	oklab(34.48% -0.0156 -0.1367)
OKLCH	oklch(34.48% 0.138 263.5)
XYZ	xyz(5.1414, 3.8385, 20.5445)
Luminance	0.0384 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10317F #7F5E10

analogous

#10687F #10317F #26107F

triadic

#10317F #7F1031 #317F10

tetradic

#10317F #7F1068 #7F5E10 #107F26

square

#10317F #7F1068 #7F5E10 #107F26

split-complementary

#10317F #7F2610 #687F10

monochromatic

#030A1B #091C49 #10317F #1746B5 #265EE4

Accessibility & contrast

On white

11.88

#10317F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#10317F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10317F

11.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10317F	#FFFFFF	#000000	##FFFFFF
##10317F	1.00	11.88	1.77	11.88
#FFFFFF	11.88	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C82

Deuteranopia (green-blind)

#00327E

Tritanopia (blue-blind)

#004553

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #10317f;
/* rgb */ color: rgb(16, 49, 127);
/* oklch */ color: oklch(34.5% 0.138 263.5);

Tailwind

colors: {
  custom: {
    50: '#6568a5',
    500: '#10317f',
    950: '#000000',
  },
}

SCSS

$custom: #10317f;
$custom-light: #6568a5;
$custom-dark: #000000;

JSON

{
  "hex": "#10317f",
  "rgb": {
    "r": 16,
    "g": 49,
    "b": 127
  },
  "hsl": {
    "h": 222.162,
    "s": 77.622,
    "l": 28.039
  },
  "oklch": {
    "l": 0.34478,
    "c": 0.13757,
    "h": 263.5
  },
  "luminance": 0.03839
}

Semantic roles & 50–950 ramp

primary

#10317F

secondary

#B58F36

accent

#BB34F4

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #10317F

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

Preview Lab → · Contrast checker → · Palette generator →