#1B2964#1B2964

#1B2964 is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.8% C 0.105 H 269.2°. Best body text is #FFFFFF at 13.57:1 contrast (WCAG AA passes).

Color values

HEX	#1B2964
RGB	rgb(27, 41, 100)
HSL	hsl(228, 57%, 25%)
HSV	hsv(228, 73%, 39%)
CMYK	cmyk(73%, 59%, 0%, 60.8%)
CIE-LAB	lab(18.97, 16.34, -36.65)
CIE-LCH	lch(18.97, 40.12, 294.02°)
OKLab	oklab(30.76% -0.0015 -0.1055)
OKLCH	oklch(30.76% 0.105 269.2)
XYZ	xyz(3.5444, 2.7386, 12.3959)
Luminance	0.0274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2964 #64561B

analogous

#1B4E64 #1B2964 #311B64

triadic

#1B2964 #641B29 #29641B

tetradic

#1B2964 #641B4E #64561B #1B6431

square

#1B2964 #641B4E #64561B #1B6431

split-complementary

#1B2964 #64311B #4E641B

monochromatic

#070A18 #0E1534 #1B2964 #283D94 #3551C4

Accessibility & contrast

On white

13.57

#1B2964 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1B2964 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2964

13.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2964	#FFFFFF	#000000	##FFFFFF
##1B2964	1.00	13.57	1.55	13.57
#FFFFFF	13.57	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003266

Deuteranopia (green-blind)

#002B63

Tritanopia (blue-blind)

#003742

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b2964;
/* rgb */ color: rgb(27, 41, 100);
/* oklch */ color: oklch(30.8% 0.105 269.2);

Tailwind

colors: {
  custom: {
    50: '#626291',
    500: '#1b2964',
    950: '#000000',
  },
}

SCSS

$custom: #1b2964;
$custom-light: #626291;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2964",
  "rgb": {
    "r": 27,
    "g": 41,
    "b": 100
  },
  "hsl": {
    "h": 228.493,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.30759,
    "c": 0.10549,
    "h": 269.2
  },
  "luminance": 0.02739
}

Semantic roles & 50–950 ramp

primary

#1B2964

secondary

#998941

accent

#C347E1

background

#F6F5F8

surface

#EBEAF0

border

#C6C6CB

text

#06050D

muted

#7A797D

Preview Lab

Preview with #1B2964

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

Preview Lab → · Contrast checker → · Palette generator →