#101B3E#101B3E

#101B3E is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.5% C 0.069 H 267.7°. Best body text is #FFFFFF at 16.82:1 contrast (WCAG AA passes).

Color values

HEX	#101B3E
RGB	rgb(16, 27, 62)
HSL	hsl(226, 59%, 15%)
HSV	hsv(226, 74%, 24%)
CMYK	cmyk(74.2%, 56.5%, 0%, 75.7%)
CIE-LAB	lab(10.86, 8.93, -23.94)
CIE-LCH	lch(10.86, 25.55, 290.45°)
OKLab	oklab(23.48% -0.0027 -0.0686)
OKLCH	oklch(23.48% 0.069 267.7)
XYZ	xyz(1.4748, 1.2417, 4.7184)
Luminance	0.0124 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B3E #3E3310

analogous

#10323E #101B3E #1C103E

triadic

#101B3E #3E101B #1B3E10

tetradic

#101B3E #3E1032 #3E3310 #103E1C

square

#101B3E #3E1032 #3E3310 #103E1C

split-complementary

#101B3E #3E1C10 #323E10

monochromatic

#060B18 #060B18 #101B3E #1D306F #29459F

Accessibility & contrast

On white

16.82

#101B3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#101B3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B3E

16.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B3E	#FFFFFF	#000000	##FFFFFF
##101B3E	1.00	16.82	1.25	16.82
#FFFFFF	16.82	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#081F3F

Deuteranopia (green-blind)

#011B3D

Tritanopia (blue-blind)

#002329

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #101b3e;
/* rgb */ color: rgb(16, 27, 62);
/* oklch */ color: oklch(23.5% 0.069 267.7);

Tailwind

colors: {
  custom: {
    50: '#545673',
    500: '#101b3e',
    950: '#000000',
  },
}

SCSS

$custom: #101b3e;
$custom-light: #545673;
$custom-dark: #000000;

JSON

{
  "hex": "#101b3e",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 62
  },
  "hsl": {
    "h": 225.652,
    "s": 58.974,
    "l": 15.294
  },
  "oklch": {
    "l": 0.2348,
    "c": 0.06863,
    "h": 267.7
  },
  "luminance": 0.01242
}

Semantic roles & 50–950 ramp

primary

#101B3E

secondary

#786732

accent

#BD46E2

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #101B3E

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

Preview Lab → · Contrast checker → · Palette generator →