#101F58#101F58

#101F58 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.8% C 0.105 H 267.4°. Best body text is #FFFFFF at 15.45:1 contrast (WCAG AA passes).

Color values

HEX	#101F58
RGB	rgb(16, 31, 88)
HSL	hsl(228, 69%, 20%)
HSV	hsv(228, 82%, 35%)
CMYK	cmyk(81.8%, 64.8%, 0%, 65.5%)
CIE-LAB	lab(14.37, 17.09, -36.18)
CIE-LCH	lch(14.37, 40.01, 295.28°)
OKLab	oklab(26.83% -0.0047 -0.1045)
OKLCH	oklch(26.83% 0.105 267.4)
XYZ	xyz(2.4645, 1.7944, 9.4471)
Luminance	0.0180 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F58 #584910

analogous

#104358 #101F58 #251058

triadic

#101F58 #58101F #1F5810

tetradic

#101F58 #581043 #584910 #105825

square

#101F58 #581043 #584910 #105825

split-complementary

#101F58 #582510 #435810

monochromatic

#05091A #070D24 #101F58 #19318C #2343C0

Accessibility & contrast

On white

15.45

#101F58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#101F58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F58

15.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F58	#FFFFFF	#000000	##FFFFFF
##101F58	1.00	15.45	1.36	15.45
#FFFFFF	15.45	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285A

Deuteranopia (green-blind)

#002157

Tritanopia (blue-blind)

#002D38

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #101f58;
/* rgb */ color: rgb(16, 31, 88);
/* oklch */ color: oklch(26.8% 0.105 267.4);

Tailwind

colors: {
  custom: {
    50: '#5b5a88',
    500: '#101f58',
    950: '#000000',
  },
}

SCSS

$custom: #101f58;
$custom-light: #5b5a88;
$custom-dark: #000000;

JSON

{
  "hex": "#101f58",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 88
  },
  "hsl": {
    "h": 227.5,
    "s": 69.231,
    "l": 20.392
  },
  "oklch": {
    "l": 0.26831,
    "c": 0.10462,
    "h": 267.4
  },
  "luminance": 0.01795
}

Semantic roles & 50–950 ramp

primary

#101F58

secondary

#917E32

accent

#C73CEC

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#04030B

muted

#79787C

Preview Lab

Preview with #101F58

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

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