#101F57#101F57

#101F57 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.7% C 0.103 H 267.4°. Best body text is #FFFFFF at 15.49:1 contrast (WCAG AA passes).

Color values

HEX	#101F57
RGB	rgb(16, 31, 87)
HSL	hsl(227, 69%, 20%)
HSV	hsv(227, 82%, 34%)
CMYK	cmyk(81.6%, 64.4%, 0%, 65.9%)
CIE-LAB	lab(14.28, 16.66, -35.66)
CIE-LCH	lch(14.28, 39.36, 295.05°)
OKLab	oklab(26.73% -0.0047 -0.103)
OKLCH	oklch(26.73% 0.103 267.4)
XYZ	xyz(2.4234, 1.7780, 9.2304)
Luminance	0.0178 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F57 #574810

analogous

#104257 #101F57 #241057

triadic

#101F57 #57101F #1F5710

tetradic

#101F57 #571042 #574810 #105724

square

#101F57 #571042 #574810 #105724

split-complementary

#101F57 #572410 #425710

monochromatic

#05091A #060D23 #101F57 #1A318B #2344BE

Accessibility & contrast

On white

15.49

#101F57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#101F57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F57

15.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F57	#FFFFFF	#000000	##FFFFFF
##101F57	1.00	15.49	1.36	15.49
#FFFFFF	15.49	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002859

Deuteranopia (green-blind)

#002156

Tritanopia (blue-blind)

#002D37

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #101f57;
/* rgb */ color: rgb(16, 31, 87);
/* oklch */ color: oklch(26.7% 0.103 267.4);

Tailwind

colors: {
  custom: {
    50: '#5b5a87',
    500: '#101f57',
    950: '#000000',
  },
}

SCSS

$custom: #101f57;
$custom-light: #5b5a87;
$custom-dark: #000000;

JSON

{
  "hex": "#101f57",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 87
  },
  "hsl": {
    "h": 227.324,
    "s": 68.932,
    "l": 20.196
  },
  "oklch": {
    "l": 0.26732,
    "c": 0.10309,
    "h": 267.4
  },
  "luminance": 0.01778
}

Semantic roles & 50–950 ramp

primary

#101F57

secondary

#907D32

accent

#C73CEC

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #101F57

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

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