#101B3F#101B3F

#101B3F is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.6% C 0.070 H 267.9°. Best body text is #FFFFFF at 16.79:1 contrast (WCAG AA passes).

Color values

HEX	#101B3F
RGB	rgb(16, 27, 63)
HSL	hsl(226, 59%, 15%)
HSV	hsv(226, 75%, 25%)
CMYK	cmyk(74.6%, 57.1%, 0%, 75.3%)
CIE-LAB	lab(10.94, 9.36, -24.52)
CIE-LCH	lch(10.94, 26.24, 290.90°)
OKLab	oklab(23.57% -0.0026 -0.0703)
OKLCH	oklch(23.57% 0.07 267.9)
XYZ	xyz(1.5025, 1.2528, 4.8643)
Luminance	0.0125 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B3F #3F3410

analogous

#10323F #101B3F #1C103F

triadic

#101B3F #3F101B #1B3F10

tetradic

#101B3F #3F1032 #3F3410 #103F1C

square

#101B3F #3F1032 #3F3410 #103F1C

split-complementary

#101B3F #3F1C10 #323F10

monochromatic

#060A18 #060A18 #101B3F #1C3070 #2945A1

Accessibility & contrast

On white

16.79

#101B3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#101B3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B3F

16.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B3F	#FFFFFF	#000000	##FFFFFF
##101B3F	1.00	16.79	1.25	16.79
#FFFFFF	16.79	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#072040

Deuteranopia (green-blind)

#001B3E

Tritanopia (blue-blind)

#00232A

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #101b3f;
/* rgb */ color: rgb(16, 27, 63);
/* oklch */ color: oklch(23.6% 0.070 267.9);

Tailwind

colors: {
  custom: {
    50: '#555674',
    500: '#101b3f',
    950: '#000000',
  },
}

SCSS

$custom: #101b3f;
$custom-light: #555674;
$custom-dark: #000000;

JSON

{
  "hex": "#101b3f",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 63
  },
  "hsl": {
    "h": 225.957,
    "s": 59.494,
    "l": 15.49
  },
  "oklch": {
    "l": 0.23566,
    "c": 0.07034,
    "h": 267.9
  },
  "luminance": 0.01253
}

Semantic roles & 50–950 ramp

primary

#101B3F

secondary

#796832

accent

#BE45E3

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #101B3F

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

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