#1B2988#1B2988

#1B2988 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.2% C 0.157 H 269.1°. Best body text is #FFFFFF at 12.21:1 contrast (WCAG AA passes).

Color values

HEX	#1B2988
RGB	rgb(27, 41, 136)
HSL	hsl(232, 67%, 32%)
HSV	hsv(232, 80%, 53%)
CMYK	cmyk(80.1%, 69.9%, 0%, 46.7%)
CIE-LAB	lab(22.29, 30.53, -54.26)
CIE-LCH	lch(22.29, 62.26, 299.37°)
OKLab	oklab(34.24% -0.0024 -0.1571)
OKLCH	oklch(34.24% 0.157 269.1)
XYZ	xyz(5.6873, 3.5958, 23.6821)
Luminance	0.0360 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2988 #887A1B

analogous

#1B5F88 #1B2988 #441B88

triadic

#1B2988 #881B29 #29881B

tetradic

#1B2988 #881B5F #887A1B #1B8844

square

#1B2988 #881B5F #887A1B #1B8844

split-complementary

#1B2988 #88441B #5F881B

monochromatic

#070A22 #111A55 #1B2988 #2538BB #4457DA

Accessibility & contrast

On white

12.21

#1B2988 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#1B2988 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2988

12.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2988	#FFFFFF	#000000	##FFFFFF
##1B2988	1.00	12.21	1.72	12.21
#FFFFFF	12.21	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8B

Deuteranopia (green-blind)

#003086

Tritanopia (blue-blind)

#004355

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b2988;
/* rgb */ color: rgb(27, 41, 136);
/* oklch */ color: oklch(34.2% 0.157 269.1);

Tailwind

colors: {
  custom: {
    50: '#6b63ac',
    500: '#1b2988',
    950: '#000000',
  },
}

SCSS

$custom: #1b2988;
$custom-light: #6b63ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2988",
  "rgb": {
    "r": 27,
    "g": 41,
    "b": 136
  },
  "hsl": {
    "h": 232.294,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.34237,
    "c": 0.15713,
    "h": 269.1
  },
  "luminance": 0.03596
}

Semantic roles & 50–950 ramp

primary

#1B2988

secondary

#BBAC44

accent

#D43EEA

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1B2988

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

Preview Lab → · Contrast checker → · Palette generator →