#1B2FB4#1B2FB4

#1B2FB4 is a dark, highly saturated blue. Relative luminance 0.056; OKLCH L 39.9% C 0.207 H 267.4°. Best body text is #FFFFFF at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#1B2FB4
RGB	rgb(27, 47, 180)
HSL	hsl(232, 74%, 41%)
HSV	hsv(232, 85%, 71%)
CMYK	cmyk(85%, 73.9%, 0%, 29.4%)
CIE-LAB	lab(28.27, 42.85, -71.23)
CIE-LCH	lch(28.27, 83.13, 301.03°)
OKLab	oklab(39.93% -0.0094 -0.2065)
OKLCH	oklch(39.93% 0.207 267.4)
XYZ	xyz(9.7039, 5.5601, 43.7329)
Luminance	0.0556 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2FB4 #B4A01B

analogous

#1B7BB4 #1B2FB4 #531BB4

triadic

#1B2FB4 #B41B2F #2FB41B

tetradic

#1B2FB4 #B41B7B #B4A01B #1BB453

square

#1B2FB4 #B41B7B #B4A01B #1BB453

split-complementary

#1B2FB4 #B4531B #7BB41B

monochromatic

#0B134A #13217F #1B2FB4 #2D44DF #6273E7

Accessibility & contrast

On white

9.94

#1B2FB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1B2FB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2FB4

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2FB4	#FFFFFF	#000000	##FFFFFF
##1B2FB4	1.00	9.94	2.11	9.94
#FFFFFF	9.94	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB8

Deuteranopia (green-blind)

#003BB2

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b2fb4;
/* rgb */ color: rgb(27, 47, 180);
/* oklch */ color: oklch(39.9% 0.207 267.4);

Tailwind

colors: {
  custom: {
    50: '#7768cc',
    500: '#1b2fb4',
    950: '#000000',
  },
}

SCSS

$custom: #1b2fb4;
$custom-light: #7768cc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2fb4",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 180
  },
  "hsl": {
    "h": 232.157,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.3993,
    "c": 0.2067,
    "h": 267.4
  },
  "luminance": 0.05561
}

Semantic roles & 50–950 ramp

primary

#1B2FB4

secondary

#CCBE5F

accent

#D837F1

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0614

muted

#7C7A82

Preview Lab

Preview with #1B2FB4

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

Preview Lab → · Contrast checker → · Palette generator →