#1B2F8E#1B2F8E

#1B2F8E is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.9% C 0.158 H 267.8°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F8E
RGB	rgb(27, 47, 142)
HSL	hsl(230, 68%, 33%)
HSV	hsv(230, 81%, 56%)
CMYK	cmyk(81%, 66.9%, 0%, 44.3%)
CIE-LAB	lab(24.38, 28.82, -54.56)
CIE-LCH	lch(24.38, 61.71, 297.85°)
OKLab	oklab(35.94% -0.0061 -0.1579)
OKLCH	oklch(35.94% 0.158 267.8)
XYZ	xyz(6.3493, 4.2183, 26.0655)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F8E #8E7A1B

analogous

#1B688E #1B2F8E #401B8E

triadic

#1B2F8E #8E1B2F #2F8E1B

tetradic

#1B2F8E #8E1B68 #8E7A1B #1B8E40

square

#1B2F8E #8E1B68 #8E7A1B #1B8E40

split-complementary

#1B2F8E #8E401B #688E1B

monochromatic

#070D27 #111E5B #1B2F8E #2540C1 #4761DC

Accessibility & contrast

On white

11.39

#1B2F8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1B2F8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F8E

11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F8E	#FFFFFF	#000000	##FFFFFF
##1B2F8E	1.00	11.39	1.84	11.39
#FFFFFF	11.39	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F91

Deuteranopia (green-blind)

#00358C

Tritanopia (blue-blind)

#00485A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b2f8e;
/* rgb */ color: rgb(27, 47, 142);
/* oklch */ color: oklch(35.9% 0.158 267.8);

Tailwind

colors: {
  custom: {
    50: '#6c67b0',
    500: '#1b2f8e',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f8e;
$custom-light: #6c67b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f8e",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 142
  },
  "hsl": {
    "h": 229.565,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.35944,
    "c": 0.15807,
    "h": 267.8
  },
  "luminance": 0.04219
}

Semantic roles & 50–950 ramp

primary

#1B2F8E

secondary

#BEA947

accent

#CD3DEB

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1B2F8E

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

Preview Lab → · Contrast checker → · Palette generator →