#101B59#101B59

#101B59 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.1% C 0.112 H 269.1°. Best body text is #FFFFFF at 15.87:1 contrast (WCAG AA passes).

Color values

HEX	#101B59
RGB	rgb(16, 27, 89)
HSL	hsl(231, 70%, 21%)
HSV	hsv(231, 82%, 35%)
CMYK	cmyk(82%, 69.7%, 0%, 65.1%)
CIE-LAB	lab(13.32, 20.47, -38.57)
CIE-LCH	lch(13.32, 43.66, 297.96°)
OKLab	oklab(26.09% -0.0018 -0.1116)
OKLCH	oklch(26.09% 0.112 269.1)
XYZ	xyz(2.4082, 1.6150, 9.6341)
Luminance	0.0162 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B59 #594E10

analogous

#103F59 #101B59 #291059

triadic

#101B59 #59101B #1B5910

tetradic

#101B59 #59103F #594E10 #105929

square

#101B59 #59103F #594E10 #105929

split-complementary

#101B59 #592910 #3F5910

monochromatic

#05081A #070B25 #101B59 #192B8D #233AC1

Accessibility & contrast

On white

15.87

#101B59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#101B59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B59

15.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B59	#FFFFFF	#000000	##FFFFFF
##101B59	1.00	15.87	1.32	15.87
#FFFFFF	15.87	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265B

Deuteranopia (green-blind)

#001F58

Tritanopia (blue-blind)

#002B37

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #101b59;
/* rgb */ color: rgb(16, 27, 89);
/* oklch */ color: oklch(26.1% 0.112 269.1);

Tailwind

colors: {
  custom: {
    50: '#5c5789',
    500: '#101b59',
    950: '#000000',
  },
}

SCSS

$custom: #101b59;
$custom-light: #5c5789;
$custom-dark: #000000;

JSON

{
  "hex": "#101b59",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 89
  },
  "hsl": {
    "h": 230.959,
    "s": 69.524,
    "l": 20.588
  },
  "oklch": {
    "l": 0.26086,
    "c": 0.11158,
    "h": 269.1
  },
  "luminance": 0.01615
}

Semantic roles & 50–950 ramp

primary

#101B59

secondary

#928433

accent

#D23BEC

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #101B59

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

Preview Lab → · Contrast checker → · Palette generator →