#1B2A64#1B2A64

#1B2A64 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 31.0% C 0.104 H 268.7°. Best body text is #FFFFFF at 13.45:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A64
RGB	rgb(27, 42, 100)
HSL	hsl(228, 57%, 25%)
HSV	hsv(228, 73%, 39%)
CMYK	cmyk(73%, 58%, 0%, 60.8%)
CIE-LAB	lab(19.26, 15.61, -36.17)
CIE-LCH	lch(19.26, 39.39, 293.34°)
OKLab	oklab(30.98% -0.0024 -0.104)
OKLCH	oklch(30.98% 0.104 268.7)
XYZ	xyz(3.5794, 2.8087, 12.4076)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A64 #64551B

analogous

#1B4F64 #1B2A64 #301B64

triadic

#1B2A64 #641B2A #2A641B

tetradic

#1B2A64 #641B4F #64551B #1B6430

square

#1B2A64 #641B4F #64551B #1B6430

split-complementary

#1B2A64 #64301B #4F641B

monochromatic

#070A18 #0E1634 #1B2A64 #283E94 #3552C4

Accessibility & contrast

On white

13.45

#1B2A64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B2A64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A64

13.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A64	#FFFFFF	#000000	##FFFFFF
##1B2A64	1.00	13.45	1.56	13.45
#FFFFFF	13.45	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003266

Deuteranopia (green-blind)

#002C63

Tritanopia (blue-blind)

#003842

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b2a64;
/* rgb */ color: rgb(27, 42, 100);
/* oklch */ color: oklch(31.0% 0.104 268.7);

Tailwind

colors: {
  custom: {
    50: '#626391',
    500: '#1b2a64',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a64;
$custom-light: #626391;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a64",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 100
  },
  "hsl": {
    "h": 227.671,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.30982,
    "c": 0.10408,
    "h": 268.7
  },
  "luminance": 0.02809
}

Semantic roles & 50–950 ramp

primary

#1B2A64

secondary

#998741

accent

#C147E1

background

#F6F5F8

surface

#EBEAF0

border

#C6C6CB

text

#06050D

muted

#7A797D

Preview Lab

Preview with #1B2A64

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

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