#101C57#101C57

#101C57 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.1% C 0.107 H 268.7°. Best body text is #FFFFFF at 15.84:1 contrast (WCAG AA passes).

Color values

HEX	#101C57
RGB	rgb(16, 28, 87)
HSL	hsl(230, 69%, 20%)
HSV	hsv(230, 82%, 34%)
CMYK	cmyk(81.6%, 67.8%, 0%, 65.9%)
CIE-LAB	lab(13.40, 18.90, -37.09)
CIE-LCH	lch(13.40, 41.62, 297.00°)
OKLab	oklab(26.08% -0.0025 -0.1072)
OKLCH	oklch(26.08% 0.107 268.7)
XYZ	xyz(2.3486, 1.6285, 9.2055)
Luminance	0.0163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101C57 #574B10

analogous

#103F57 #101C57 #271057

triadic

#101C57 #57101C #1C5710

tetradic

#101C57 #57103F #574B10 #105727

square

#101C57 #57103F #574B10 #105727

split-complementary

#101C57 #572710 #3F5710

monochromatic

#05081A #060B23 #101C57 #1A2D8B #233DBE

Accessibility & contrast

On white

15.84

#101C57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#101C57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101C57

15.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101C57	#FFFFFF	#000000	##FFFFFF
##101C57	1.00	15.84	1.33	15.84
#FFFFFF	15.84	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002659

Deuteranopia (green-blind)

#001F56

Tritanopia (blue-blind)

#002B36

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #101c57;
/* rgb */ color: rgb(16, 28, 87);
/* oklch */ color: oklch(26.1% 0.107 268.7);

Tailwind

colors: {
  custom: {
    50: '#5b5787',
    500: '#101c57',
    950: '#000000',
  },
}

SCSS

$custom: #101c57;
$custom-light: #5b5787;
$custom-dark: #000000;

JSON

{
  "hex": "#101c57",
  "rgb": {
    "r": 16,
    "g": 28,
    "b": 87
  },
  "hsl": {
    "h": 229.859,
    "s": 68.932,
    "l": 20.196
  },
  "oklch": {
    "l": 0.26084,
    "c": 0.10724,
    "h": 268.7
  },
  "luminance": 0.01629
}

Semantic roles & 50–950 ramp

primary

#101C57

secondary

#908132

accent

#CE3CEC

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #101C57

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

Preview Lab → · Contrast checker → · Palette generator →