#1B274F#1B274F

#1B274F is a dark, moderate blue. Relative luminance 0.022; OKLCH L 28.6% C 0.075 H 268.8°. Best body text is #FFFFFF at 14.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B274F
RGB	rgb(27, 39, 79)
HSL	hsl(226, 49%, 21%)
HSV	hsv(226, 66%, 31%)
CMYK	cmyk(65.8%, 50.6%, 0%, 69%)
CIE-LAB	lab(16.74, 9.31, -26.23)
CIE-LCH	lch(16.74, 27.84, 289.53°)
OKLab	oklab(28.56% -0.0016 -0.0749)
OKLCH	oklch(28.56% 0.075 268.8)
XYZ	xyz(2.5883, 2.2484, 7.6932)
Luminance	0.0225 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B274F #4F431B

analogous

#1B414F #1B274F #291B4F

triadic

#1B274F #4F1B27 #274F1B

tetradic

#1B274F #4F1B41 #4F431B #1B4F29

square

#1B274F #4F1B41 #4F431B #1B4F29

split-complementary

#1B274F #4F291B #414F1B

monochromatic

#080B17 #0B1021 #1B274F #2B3E7D #3A54AA

Accessibility & contrast

On white

14.48

#1B274F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#1B274F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B274F

14.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B274F	#FFFFFF	#000000	##FFFFFF
##1B274F	1.00	14.48	1.45	14.48
#FFFFFF	14.48	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#142C50

Deuteranopia (green-blind)

#0C274E

Tritanopia (blue-blind)

#003037

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1b274f;
/* rgb */ color: rgb(27, 39, 79);
/* oklch */ color: oklch(28.6% 0.075 268.8);

Tailwind

colors: {
  custom: {
    50: '#5d6080',
    500: '#1b274f',
    950: '#000000',
  },
}

SCSS

$custom: #1b274f;
$custom-light: #5d6080;
$custom-dark: #000000;

JSON

{
  "hex": "#1b274f",
  "rgb": {
    "r": 27,
    "g": 39,
    "b": 79
  },
  "hsl": {
    "h": 226.154,
    "s": 49.057,
    "l": 20.784
  },
  "oklch": {
    "l": 0.2856,
    "c": 0.07489,
    "h": 268.8
  },
  "luminance": 0.02249
}

Semantic roles & 50–950 ramp

primary

#1B274F

secondary

#857541

accent

#B94FD9

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04050A

muted

#79797C

Preview Lab

Preview with #1B274F

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

Preview Lab → · Contrast checker → · Palette generator →