#1B276B#1B276B

#1B276B is a dark, moderate blue. Relative luminance 0.027; OKLCH L 31.0% C 0.119 H 270.2°. Best body text is #FFFFFF at 13.56:1 contrast (WCAG AA passes).

Color values

HEX	#1B276B
RGB	rgb(27, 39, 107)
HSL	hsl(231, 60%, 26%)
HSV	hsv(231, 75%, 42%)
CMYK	cmyk(74.8%, 63.6%, 0%, 58%)
CIE-LAB	lab(18.99, 20.59, -41.17)
CIE-LCH	lch(18.99, 46.04, 296.57°)
OKLab	oklab(30.97% 0.0005 -0.1188)
OKLCH	oklch(30.97% 0.119 270.2)
XYZ	xyz(3.8304, 2.7452, 14.2351)
Luminance	0.0275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B276B #6B5F1B

analogous

#1B4F6B #1B276B #371B6B

triadic

#1B276B #6B1B27 #276B1B

tetradic

#1B276B #6B1B4F #6B5F1B #1B6B37

square

#1B276B #6B1B4F #6B5F1B #1B6B37

split-complementary

#1B276B #6B371B #4F6B1B

monochromatic

#060918 #0F153A #1B276B #27399C #354BCC

Accessibility & contrast

On white

13.56

#1B276B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1B276B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B276B

13.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B276B	#FFFFFF	#000000	##FFFFFF
##1B276B	1.00	13.56	1.55	13.56
#FFFFFF	13.56	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00326D

Deuteranopia (green-blind)

#002B6A

Tritanopia (blue-blind)

#003845

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b276b;
/* rgb */ color: rgb(27, 39, 107);
/* oklch */ color: oklch(31.0% 0.119 270.2);

Tailwind

colors: {
  custom: {
    50: '#646096',
    500: '#1b276b',
    950: '#000000',
  },
}

SCSS

$custom: #1b276b;
$custom-light: #646096;
$custom-dark: #000000;

JSON

{
  "hex": "#1b276b",
  "rgb": {
    "r": 27,
    "g": 39,
    "b": 107
  },
  "hsl": {
    "h": 231,
    "s": 59.701,
    "l": 26.275
  },
  "oklch": {
    "l": 0.30969,
    "c": 0.11881,
    "h": 270.2
  },
  "luminance": 0.02746
}

Semantic roles & 50–950 ramp

primary

#1B276B

secondary

#A09242

accent

#CB45E3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050D

muted

#7A797E

Preview Lab

Preview with #1B276B

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

Preview Lab → · Contrast checker → · Palette generator →