#101B40#101B40

#101B40 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.7% C 0.072 H 268.1°. Best body text is #FFFFFF at 16.76:1 contrast (WCAG AA passes).

Color values

HEX	#101B40
RGB	rgb(16, 27, 64)
HSL	hsl(226, 60%, 16%)
HSV	hsv(226, 75%, 25%)
CMYK	cmyk(75%, 57.8%, 0%, 74.9%)
CIE-LAB	lab(11.02, 9.79, -25.09)
CIE-LCH	lch(11.02, 26.94, 291.32°)
OKLab	oklab(23.65% -0.0024 -0.072)
OKLCH	oklch(23.65% 0.072 268.1)
XYZ	xyz(1.5307, 1.2640, 5.0128)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B40 #403510

analogous

#103340 #101B40 #1D1040

triadic

#101B40 #40101B #1B4010

tetradic

#101B40 #401033 #403510 #10401D

square

#101B40 #401033 #403510 #10401D

split-complementary

#101B40 #401D10 #334010

monochromatic

#060A18 #060A18 #101B40 #1C3071 #2844A2

Accessibility & contrast

On white

16.76

#101B40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#101B40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B40

16.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B40	#FFFFFF	#000000	##FFFFFF
##101B40	1.00	16.76	1.25	16.76
#FFFFFF	16.76	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#062041

Deuteranopia (green-blind)

#001B3F

Tritanopia (blue-blind)

#00242A

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #101b40;
/* rgb */ color: rgb(16, 27, 64);
/* oklch */ color: oklch(23.7% 0.072 268.1);

Tailwind

colors: {
  custom: {
    50: '#555675',
    500: '#101b40',
    950: '#000000',
  },
}

SCSS

$custom: #101b40;
$custom-light: #555675;
$custom-dark: #000000;

JSON

{
  "hex": "#101b40",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 64
  },
  "hsl": {
    "h": 226.25,
    "s": 60,
    "l": 15.686
  },
  "oklch": {
    "l": 0.23653,
    "c": 0.07202,
    "h": 268.1
  },
  "luminance": 0.01264
}

Semantic roles & 50–950 ramp

primary

#101B40

secondary

#7A6932

accent

#BF45E3

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #101B40

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

Preview Lab → · Contrast checker → · Palette generator →