#1B2A7E#1B2A7E

#1B2A7E is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.4% C 0.142 H 269.1°. Best body text is #FFFFFF at 12.51:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A7E
RGB	rgb(27, 42, 126)
HSL	hsl(231, 65%, 30%)
HSV	hsv(231, 79%, 49%)
CMYK	cmyk(78.6%, 66.7%, 0%, 50.6%)
CIE-LAB	lab(21.56, 26.01, -49.17)
CIE-LCH	lch(21.56, 55.62, 297.88°)
OKLab	oklab(33.41% -0.0023 -0.1422)
OKLCH	oklch(33.41% 0.142 269.1)
XYZ	xyz(5.0446, 3.3947, 20.1240)
Luminance	0.0340 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A7E #7E6F1B

analogous

#1B5C7E #1B2A7E #3D1B7E

triadic

#1B2A7E #7E1B2A #2A7E1B

tetradic

#1B2A7E #7E1B5C #7E6F1B #1B7E3D

square

#1B2A7E #7E1B5C #7E6F1B #1B7E3D

split-complementary

#1B2A7E #7E3D1B #5C7E1B

monochromatic

#050819 #10194C #1B2A7E #263BB0 #3E55D6

Accessibility & contrast

On white

12.51

#1B2A7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B2A7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A7E

12.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A7E	#FFFFFF	#000000	##FFFFFF
##1B2A7E	1.00	12.51	1.68	12.51
#FFFFFF	12.51	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003881

Deuteranopia (green-blind)

#002F7C

Tritanopia (blue-blind)

#004050

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2a7e;
/* rgb */ color: rgb(27, 42, 126);
/* oklch */ color: oklch(33.4% 0.142 269.1);

Tailwind

colors: {
  custom: {
    50: '#6963a4',
    500: '#1b2a7e',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a7e;
$custom-light: #6963a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a7e",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 126
  },
  "hsl": {
    "h": 230.909,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.33406,
    "c": 0.14222,
    "h": 269.1
  },
  "luminance": 0.03395
}

Semantic roles & 50–950 ramp

primary

#1B2A7E

secondary

#B2A143

accent

#CE40E8

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1B2A7E

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

Preview Lab → · Contrast checker → · Palette generator →