#101257#101257

#101257 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 24.2% C 0.120 H 271.8°. Best body text is #FFFFFF at 16.85:1 contrast (WCAG AA passes).

Color values

HEX	#101257
RGB	rgb(16, 18, 87)
HSL	hsl(238, 69%, 20%)
HSV	hsv(238, 82%, 34%)
CMYK	cmyk(81.6%, 79.3%, 0%, 65.9%)
CIE-LAB	lab(10.78, 25.96, -41.39)
CIE-LCH	lch(10.78, 48.86, 302.10°)
OKLab	oklab(24.18% 0.0038 -0.1198)
OKLCH	oklch(24.18% 0.12 271.8)
XYZ	xyz(2.1497, 1.2307, 9.1392)
Luminance	0.0123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101257 #575510

analogous

#103557 #101257 #311057

triadic

#101257 #571012 #125710

tetradic

#101257 #571035 #575510 #105731

square

#101257 #571035 #575510 #105731

split-complementary

#101257 #573110 #355710

monochromatic

#05051A #060723 #101257 #1A1D8B #2327BE

Accessibility & contrast

On white

16.85

#101257 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#101257 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101257

16.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101257	#FFFFFF	#000000	##FFFFFF
##101257	1.00	16.85	1.25	16.85
#FFFFFF	16.85	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002059

Deuteranopia (green-blind)

#001A56

Tritanopia (blue-blind)

#002633

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #101257;
/* rgb */ color: rgb(16, 18, 87);
/* oklch */ color: oklch(24.2% 0.120 271.8);

Tailwind

colors: {
  custom: {
    50: '#5c5087',
    500: '#101257',
    950: '#000000',
  },
}

SCSS

$custom: #101257;
$custom-light: #5c5087;
$custom-dark: #000000;

JSON

{
  "hex": "#101257",
  "rgb": {
    "r": 16,
    "g": 18,
    "b": 87
  },
  "hsl": {
    "h": 238.31,
    "s": 68.932,
    "l": 20.196
  },
  "oklch": {
    "l": 0.24182,
    "c": 0.11988,
    "h": 271.8
  },
  "luminance": 0.01231
}

Semantic roles & 50–950 ramp

primary

#101257

secondary

#908E32

accent

#E73CEC

background

#F5F4F8

surface

#E9E7F0

border

#C5C3CB

text

#05020B

muted

#79787C

Preview Lab

Preview with #101257

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

Preview Lab → · Contrast checker → · Palette generator →