#1B274D#1B274D

#1B274D is a dark, moderate blue. Relative luminance 0.022; OKLCH L 28.4% C 0.072 H 268.4°. Best body text is #FFFFFF at 14.54:1 contrast (WCAG AA passes).

Color values

HEX	#1B274D
RGB	rgb(27, 39, 77)
HSL	hsl(226, 48%, 20%)
HSV	hsv(226, 65%, 30%)
CMYK	cmyk(64.9%, 49.4%, 0%, 69.8%)
CIE-LAB	lab(16.60, 8.51, -25.10)
CIE-LCH	lch(16.60, 26.50, 288.72°)
OKLab	oklab(28.41% -0.002 -0.0715)
OKLCH	oklch(28.41% 0.072 268.4)
XYZ	xyz(2.5166, 2.2197, 7.3156)
Luminance	0.0222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B274D #4D411B

analogous

#1B404D #1B274D #281B4D

triadic

#1B274D #4D1B27 #274D1B

tetradic

#1B274D #4D1B40 #4D411B #1B4D28

square

#1B274D #4D1B40 #4D411B #1B4D28

split-complementary

#1B274D #4D281B #404D1B

monochromatic

#080B17 #0B1020 #1B274D #2B3E7A #3B55A8

Accessibility & contrast

On white

14.54

#1B274D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1B274D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B274D

14.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B274D	#FFFFFF	#000000	##FFFFFF
##1B274D	1.00	14.54	1.44	14.54
#FFFFFF	14.54	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#162B4E

Deuteranopia (green-blind)

#0E274C

Tritanopia (blue-blind)

#002F36

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1b274d;
/* rgb */ color: rgb(27, 39, 77);
/* oklch */ color: oklch(28.4% 0.072 268.4);

Tailwind

colors: {
  custom: {
    50: '#5d607f',
    500: '#1b274d',
    950: '#000000',
  },
}

SCSS

$custom: #1b274d;
$custom-light: #5d607f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b274d",
  "rgb": {
    "r": 27,
    "g": 39,
    "b": 77
  },
  "hsl": {
    "h": 225.6,
    "s": 48.077,
    "l": 20.392
  },
  "oklch": {
    "l": 0.28408,
    "c": 0.07157,
    "h": 268.4
  },
  "luminance": 0.0222
}

Semantic roles & 50–950 ramp

primary

#1B274D

secondary

#837341

accent

#B750D8

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04050A

muted

#79797C

Preview Lab

Preview with #1B274D

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

Preview Lab → · Contrast checker → · Palette generator →