#101251#101251

#101251 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.5% C 0.111 H 272.5°. Best body text is #FFFFFF at 17.11:1 contrast (WCAG AA passes).

Color values

HEX	#101251
RGB	rgb(16, 18, 81)
HSL	hsl(238, 67%, 19%)
HSV	hsv(238, 80%, 32%)
CMYK	cmyk(80.2%, 77.8%, 0%, 68.2%)
CIE-LAB	lab(10.08, 23.63, -38.45)
CIE-LCH	lch(10.08, 45.13, 301.57°)
OKLab	oklab(23.47% 0.0048 -0.1112)
OKLCH	oklch(23.47% 0.111 272.5)
XYZ	xyz(1.9147, 1.1367, 7.9015)
Luminance	0.0114 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101251 #514F10

analogous

#103351 #101251 #2F1051

triadic

#101251 #511012 #125110

tetradic

#101251 #511033 #514F10 #10512F

square

#101251 #511033 #514F10 #10512F

split-complementary

#101251 #512F10 #335110

monochromatic

#05061A #06071E #101251 #1A1D84 #2429B7

Accessibility & contrast

On white

17.11

#101251 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#101251 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101251

17.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101251	#FFFFFF	#000000	##FFFFFF
##101251	1.00	17.11	1.23	17.11
#FFFFFF	17.11	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F53

Deuteranopia (green-blind)

#001850

Tritanopia (blue-blind)

#002430

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #101251;
/* rgb */ color: rgb(16, 18, 81);
/* oklch */ color: oklch(23.5% 0.111 272.5);

Tailwind

colors: {
  custom: {
    50: '#5b5083',
    500: '#101251',
    950: '#000000',
  },
}

SCSS

$custom: #101251;
$custom-light: #5b5083;
$custom-dark: #000000;

JSON

{
  "hex": "#101251",
  "rgb": {
    "r": 16,
    "g": 18,
    "b": 81
  },
  "hsl": {
    "h": 238.154,
    "s": 67.01,
    "l": 19.02
  },
  "oklch": {
    "l": 0.23472,
    "c": 0.11136,
    "h": 272.5
  },
  "luminance": 0.01137
}

Semantic roles & 50–950 ramp

primary

#101251

secondary

#8B8832

accent

#E53EEA

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#04020B

muted

#79787C

Preview Lab

Preview with #101251

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

Preview Lab → · Contrast checker → · Palette generator →