#101C5A#101C5A

#101C5A is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.4% C 0.112 H 268.7°. Best body text is #FFFFFF at 15.72:1 contrast (WCAG AA passes).

Color values

HEX	#101C5A
RGB	rgb(16, 28, 90)
HSL	hsl(230, 70%, 21%)
HSV	hsv(230, 82%, 35%)
CMYK	cmyk(82.2%, 68.9%, 0%, 64.7%)
CIE-LAB	lab(13.70, 20.15, -38.62)
CIE-LCH	lch(13.70, 43.56, 297.56°)
OKLab	oklab(26.4% -0.0026 -0.1117)
OKLCH	oklch(26.4% 0.112 268.7)
XYZ	xyz(2.4738, 1.6786, 9.8645)
Luminance	0.0168 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101C5A #5A4E10

analogous

#10415A #101C5A #29105A

triadic

#101C5A #5A101C #1C5A10

tetradic

#101C5A #5A1041 #5A4E10 #105A29

square

#101C5A #5A1041 #5A4E10 #105A29

split-complementary

#101C5A #5A2910 #415A10

monochromatic

#05081A #070C26 #101C5A #192C8E #223CC2

Accessibility & contrast

On white

15.72

#101C5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#101C5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101C5A

15.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101C5A	#FFFFFF	#000000	##FFFFFF
##101C5A	1.00	15.72	1.34	15.72
#FFFFFF	15.72	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275C

Deuteranopia (green-blind)

#002059

Tritanopia (blue-blind)

#002C38

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #101c5a;
/* rgb */ color: rgb(16, 28, 90);
/* oklch */ color: oklch(26.4% 0.112 268.7);

Tailwind

colors: {
  custom: {
    50: '#5c5889',
    500: '#101c5a',
    950: '#000000',
  },
}

SCSS

$custom: #101c5a;
$custom-light: #5c5889;
$custom-dark: #000000;

JSON

{
  "hex": "#101c5a",
  "rgb": {
    "r": 16,
    "g": 28,
    "b": 90
  },
  "hsl": {
    "h": 230.27,
    "s": 69.811,
    "l": 20.784
  },
  "oklch": {
    "l": 0.26396,
    "c": 0.11173,
    "h": 268.7
  },
  "luminance": 0.01679
}

Semantic roles & 50–950 ramp

primary

#101C5A

secondary

#938433

accent

#D03BED

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #101C5A

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

Preview Lab → · Contrast checker → · Palette generator →