#101B42#101B42

#101B42 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.8% C 0.075 H 268.3°. Best body text is #FFFFFF at 16.70:1 contrast (WCAG AA passes).

Color values

HEX	#101B42
RGB	rgb(16, 27, 66)
HSL	hsl(227, 61%, 16%)
HSV	hsv(227, 76%, 26%)
CMYK	cmyk(75.8%, 59.1%, 0%, 74.1%)
CIE-LAB	lab(11.19, 10.66, -26.23)
CIE-LCH	lch(11.19, 28.32, 292.12°)
OKLab	oklab(23.83% -0.0022 -0.0753)
OKLCH	oklch(23.83% 0.075 268.3)
XYZ	xyz(1.5887, 1.2872, 5.3179)
Luminance	0.0129 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B42 #423710

analogous

#103442 #101B42 #1E1042

triadic

#101B42 #42101B #1B4210

tetradic

#101B42 #421034 #423710 #10421E

square

#101B42 #421034 #423710 #10421E

split-complementary

#101B42 #421E10 #344210

monochromatic

#060A19 #060A19 #101B42 #1C2F73 #2843A5

Accessibility & contrast

On white

16.70

#101B42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#101B42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B42

16.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B42	#FFFFFF	#000000	##FFFFFF
##101B42	1.00	16.70	1.26	16.70
#FFFFFF	16.70	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#042043

Deuteranopia (green-blind)

#001C41

Tritanopia (blue-blind)

#00242B

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #101b42;
/* rgb */ color: rgb(16, 27, 66);
/* oklch */ color: oklch(23.8% 0.075 268.3);

Tailwind

colors: {
  custom: {
    50: '#555677',
    500: '#101b42',
    950: '#000000',
  },
}

SCSS

$custom: #101b42;
$custom-light: #555677;
$custom-dark: #000000;

JSON

{
  "hex": "#101b42",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 66
  },
  "hsl": {
    "h": 226.8,
    "s": 60.976,
    "l": 16.078
  },
  "oklch": {
    "l": 0.2383,
    "c": 0.07538,
    "h": 268.3
  },
  "luminance": 0.01287
}

Semantic roles & 50–950 ramp

primary

#101B42

secondary

#7C6C32

accent

#C144E4

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #101B42

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

Preview Lab → · Contrast checker → · Palette generator →