#101B51#101B51

#101B51 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.3% C 0.099 H 269.1°. Best body text is #FFFFFF at 16.18:1 contrast (WCAG AA passes).

Color values

HEX	#101B51
RGB	rgb(16, 27, 81)
HSL	hsl(230, 67%, 19%)
HSV	hsv(230, 80%, 32%)
CMYK	cmyk(80.2%, 66.7%, 0%, 68.2%)
CIE-LAB	lab(12.53, 17.11, -34.44)
CIE-LCH	lch(12.53, 38.45, 296.42°)
OKLab	oklab(25.26% -0.0016 -0.0994)
OKLCH	oklch(25.26% 0.099 269.1)
XYZ	xyz(2.0903, 1.4879, 7.9600)
Luminance	0.0149 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B51 #514610

analogous

#103C51 #101B51 #261051

triadic

#101B51 #51101B #1B5110

tetradic

#101B51 #51103C #514610 #105126

square

#101B51 #51103C #514610 #105126

split-complementary

#101B51 #512610 #3C5110

monochromatic

#05091A #060A1E #101B51 #1A2C84 #243DB7

Accessibility & contrast

On white

16.18

#101B51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#101B51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B51

16.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B51	#FFFFFF	#000000	##FFFFFF
##101B51	1.00	16.18	1.30	16.18
#FFFFFF	16.18	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002453

Deuteranopia (green-blind)

#001E50

Tritanopia (blue-blind)

#002933

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #101b51;
/* rgb */ color: rgb(16, 27, 81);
/* oklch */ color: oklch(25.3% 0.099 269.1);

Tailwind

colors: {
  custom: {
    50: '#5a5782',
    500: '#101b51',
    950: '#000000',
  },
}

SCSS

$custom: #101b51;
$custom-light: #5a5782;
$custom-dark: #000000;

JSON

{
  "hex": "#101b51",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 81
  },
  "hsl": {
    "h": 229.846,
    "s": 67.01,
    "l": 19.02
  },
  "oklch": {
    "l": 0.25259,
    "c": 0.09946,
    "h": 269.1
  },
  "luminance": 0.01488
}

Semantic roles & 50–950 ramp

primary

#101B51

secondary

#8B7C32

accent

#CD3EEA

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030A

muted

#79787C

Preview Lab

Preview with #101B51

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

Preview Lab → · Contrast checker → · Palette generator →