#101B58#101B58

#101B58 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.0% C 0.110 H 269.1°. Best body text is #FFFFFF at 15.91:1 contrast (WCAG AA passes).

Color values

HEX	#101B58
RGB	rgb(16, 27, 88)
HSL	hsl(231, 69%, 20%)
HSV	hsv(231, 82%, 35%)
CMYK	cmyk(81.8%, 69.3%, 0%, 65.5%)
CIE-LAB	lab(13.22, 20.05, -38.06)
CIE-LCH	lch(13.22, 43.02, 297.79°)
OKLab	oklab(25.98% -0.0018 -0.1101)
OKLCH	oklch(25.98% 0.11 269.1)
XYZ	xyz(2.3665, 1.5983, 9.4144)
Luminance	0.0160 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B58 #584D10

analogous

#103F58 #101B58 #291058

triadic

#101B58 #58101B #1B5810

tetradic

#101B58 #58103F #584D10 #105829

square

#101B58 #58103F #584D10 #105829

split-complementary

#101B58 #582910 #3F5810

monochromatic

#05081A #070B24 #101B58 #192B8C #233BC0

Accessibility & contrast

On white

15.91

#101B58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#101B58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B58

15.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B58	#FFFFFF	#000000	##FFFFFF
##101B58	1.00	15.91	1.32	15.91
#FFFFFF	15.91	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00255A

Deuteranopia (green-blind)

#001F57

Tritanopia (blue-blind)

#002B36

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #101b58;
/* rgb */ color: rgb(16, 27, 88);
/* oklch */ color: oklch(26.0% 0.110 269.1);

Tailwind

colors: {
  custom: {
    50: '#5c5788',
    500: '#101b58',
    950: '#000000',
  },
}

SCSS

$custom: #101b58;
$custom-light: #5c5788;
$custom-dark: #000000;

JSON

{
  "hex": "#101b58",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 88
  },
  "hsl": {
    "h": 230.833,
    "s": 69.231,
    "l": 20.392
  },
  "oklch": {
    "l": 0.25981,
    "c": 0.11008,
    "h": 269.1
  },
  "luminance": 0.01599
}

Semantic roles & 50–950 ramp

primary

#101B58

secondary

#918332

accent

#D13CEC

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #101B58

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

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