#1B276C#1B276C

#1B276C is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.1% C 0.120 H 270.2°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#1B276C
RGB	rgb(27, 39, 108)
HSL	hsl(231, 60%, 26%)
HSV	hsv(231, 75%, 42%)
CMYK	cmyk(75%, 63.9%, 0%, 57.6%)
CIE-LAB	lab(19.08, 20.99, -41.68)
CIE-LCH	lch(19.08, 46.67, 296.73°)
OKLab	oklab(31.06% 0.0005 -0.1203)
OKLCH	oklch(31.06% 0.12 270.2)
XYZ	xyz(3.8834, 2.7664, 14.5138)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B276C #6C601B

analogous

#1B506C #1B276C #381B6C

triadic

#1B276C #6C1B27 #276C1B

tetradic

#1B276C #6C1B50 #6C601B #1B6C38

square

#1B276C #6C1B50 #6C601B #1B6C38

split-complementary

#1B276C #6C381B #506C1B

monochromatic

#060918 #0F153B #1B276C #27399D #354BCC

Accessibility & contrast

On white

13.52

#1B276C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1B276C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B276C

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B276C	#FFFFFF	#000000	##FFFFFF
##1B276C	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00326E

Deuteranopia (green-blind)

#002B6B

Tritanopia (blue-blind)

#003845

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b276c;
/* rgb */ color: rgb(27, 39, 108);
/* oklch */ color: oklch(31.1% 0.120 270.2);

Tailwind

colors: {
  custom: {
    50: '#646197',
    500: '#1b276c',
    950: '#000000',
  },
}

SCSS

$custom: #1b276c;
$custom-light: #646197;
$custom-dark: #000000;

JSON

{
  "hex": "#1b276c",
  "rgb": {
    "r": 27,
    "g": 39,
    "b": 108
  },
  "hsl": {
    "h": 231.111,
    "s": 60,
    "l": 26.471
  },
  "oklch": {
    "l": 0.31063,
    "c": 0.12029,
    "h": 270.2
  },
  "luminance": 0.02767
}

Semantic roles & 50–950 ramp

primary

#1B276C

secondary

#A19342

accent

#CC45E3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050D

muted

#7A797E

Preview Lab

Preview with #1B276C

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

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