#1B2A8F#1B2A8F

#1B2A8F is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.1% C 0.165 H 268.8°. Best body text is #FFFFFF at 11.83:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A8F
RGB	rgb(27, 42, 143)
HSL	hsl(232, 68%, 33%)
HSV	hsv(232, 81%, 56%)
CMYK	cmyk(81.1%, 70.6%, 0%, 43.9%)
CIE-LAB	lab(23.24, 32.52, -57.05)
CIE-LCH	lch(23.24, 65.67, 299.68°)
OKLab	oklab(35.14% -0.0036 -0.1652)
OKLCH	oklch(35.14% 0.165 268.8)
XYZ	xyz(6.2362, 3.8714, 26.3999)
Luminance	0.0387 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A8F #8F801B

analogous

#1B648F #1B2A8F #461B8F

triadic

#1B2A8F #8F1B2A #2A8F1B

tetradic

#1B2A8F #8F1B64 #8F801B #1B8F46

square

#1B2A8F #8F1B64 #8F801B #1B8F46

split-complementary

#1B2A8F #8F461B #648F1B

monochromatic

#080C28 #111B5C #1B2A8F #2539C2 #485BDC

Accessibility & contrast

On white

11.83

#1B2A8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1B2A8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A8F

11.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A8F	#FFFFFF	#000000	##FFFFFF
##1B2A8F	1.00	11.83	1.77	11.83
#FFFFFF	11.83	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D92

Deuteranopia (green-blind)

#00328D

Tritanopia (blue-blind)

#004659

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b2a8f;
/* rgb */ color: rgb(27, 42, 143);
/* oklch */ color: oklch(35.1% 0.165 268.8);

Tailwind

colors: {
  custom: {
    50: '#6d64b1',
    500: '#1b2a8f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a8f;
$custom-light: #6d64b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a8f",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 143
  },
  "hsl": {
    "h": 232.241,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.35144,
    "c": 0.16529,
    "h": 268.8
  },
  "luminance": 0.03872
}

Semantic roles & 50–950 ramp

primary

#1B2A8F

secondary

#BEAF48

accent

#D53DEB

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#080511

muted

#7B7980

Preview Lab

Preview with #1B2A8F

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

Preview Lab → · Contrast checker → · Palette generator →