#10175B#10175B

#10175B is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.5% C 0.120 H 270.2°. Best body text is #FFFFFF at 16.21:1 contrast (WCAG AA passes).

Color values

HEX	#10175B
RGB	rgb(16, 23, 91)
HSL	hsl(234, 70%, 21%)
HSV	hsv(234, 82%, 36%)
CMYK	cmyk(82.4%, 74.7%, 0%, 64.3%)
CIE-LAB	lab(12.47, 24.14, -41.32)
CIE-LCH	lch(12.47, 47.85, 300.30°)
OKLab	oklab(25.53% 0.0005 -0.1196)
OKLCH	oklch(25.53% 0.12 270.2)
XYZ	xyz(2.4078, 1.4780, 10.0539)
Luminance	0.0148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10175B #5B5410

analogous

#103C5B #10175B #2E105B

triadic

#10175B #5B1017 #175B10

tetradic

#10175B #5B103C #5B5410 #105B2E

square

#10175B #5B103C #5B5410 #105B2E

split-complementary

#10175B #5B2E10 #3C5B10

monochromatic

#05071A #070A27 #10175B #19248F #2231C3

Accessibility & contrast

On white

16.21

#10175B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#10175B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10175B

16.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10175B	#FFFFFF	#000000	##FFFFFF
##10175B	1.00	16.21	1.30	16.21
#FFFFFF	16.21	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00245D

Deuteranopia (green-blind)

#001D5A

Tritanopia (blue-blind)

#002A37

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #10175b;
/* rgb */ color: rgb(16, 23, 91);
/* oklch */ color: oklch(25.5% 0.120 270.2);

Tailwind

colors: {
  custom: {
    50: '#5d548a',
    500: '#10175b',
    950: '#000000',
  },
}

SCSS

$custom: #10175b;
$custom-light: #5d548a;
$custom-dark: #000000;

JSON

{
  "hex": "#10175b",
  "rgb": {
    "r": 16,
    "g": 23,
    "b": 91
  },
  "hsl": {
    "h": 234.4,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.25529,
    "c": 0.11961,
    "h": 270.2
  },
  "luminance": 0.01478
}

Semantic roles & 50–950 ramp

primary

#10175B

secondary

#948B33

accent

#DC3BED

background

#F5F4F8

surface

#EAE7F0

border

#C6C3CB

text

#05020C

muted

#79787D

Preview Lab

Preview with #10175B

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

Preview Lab → · Contrast checker → · Palette generator →