#1B2D88#1B2D88

#1B2D88 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.0% C 0.152 H 268.3°. Best body text is #FFFFFF at 11.82:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D88
RGB	rgb(27, 45, 136)
HSL	hsl(230, 67%, 32%)
HSV	hsv(230, 80%, 53%)
CMYK	cmyk(80.1%, 66.9%, 0%, 46.7%)
CIE-LAB	lab(23.29, 27.85, -52.61)
CIE-LCH	lch(23.29, 59.53, 297.90°)
OKLab	oklab(34.97% -0.0046 -0.1523)
OKLCH	oklch(34.97% 0.152 268.3)
XYZ	xyz(5.8328, 3.8867, 23.7306)
Luminance	0.0389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D88 #88761B

analogous

#1B6488 #1B2D88 #401B88

triadic

#1B2D88 #881B2D #2D881B

tetradic

#1B2D88 #881B64 #88761B #1B8840

square

#1B2D88 #881B64 #88761B #1B8840

split-complementary

#1B2D88 #88401B #64881B

monochromatic

#070B22 #111C55 #1B2D88 #253EBB #445CDA

Accessibility & contrast

On white

11.82

#1B2D88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1B2D88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D88

11.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D88	#FFFFFF	#000000	##FFFFFF
##1B2D88	1.00	11.82	1.78	11.82
#FFFFFF	11.82	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D8B

Deuteranopia (green-blind)

#003286

Tritanopia (blue-blind)

#004556

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b2d88;
/* rgb */ color: rgb(27, 45, 136);
/* oklch */ color: oklch(35.0% 0.152 268.3);

Tailwind

colors: {
  custom: {
    50: '#6b66ac',
    500: '#1b2d88',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d88;
$custom-light: #6b66ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d88",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 136
  },
  "hsl": {
    "h": 230.092,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.34971,
    "c": 0.15233,
    "h": 268.3
  },
  "luminance": 0.03887
}

Semantic roles & 50–950 ramp

primary

#1B2D88

secondary

#BBA744

accent

#CD3EEA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080510

muted

#7B7A7F

Preview Lab

Preview with #1B2D88

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

Preview Lab → · Contrast checker → · Palette generator →