#1B2D74#1B2D74

#1B2D74 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.1% C 0.124 H 268.0°. Best body text is #FFFFFF at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D74
RGB	rgb(27, 45, 116)
HSL	hsl(228, 62%, 28%)
HSV	hsv(228, 77%, 45%)
CMYK	cmyk(76.7%, 61.2%, 0%, 54.5%)
CIE-LAB	lab(21.47, 19.93, -42.95)
CIE-LCH	lch(21.47, 47.34, 294.90°)
OKLab	oklab(33.06% -0.0043 -0.1239)
OKLCH	oklch(33.06% 0.124 268)
XYZ	xyz(4.5417, 3.3703, 16.9308)
Luminance	0.0337 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D74 #74621B

analogous

#1B5974 #1B2D74 #351B74

triadic

#1B2D74 #741B2D #2D741B

tetradic

#1B2D74 #741B59 #74621B #1B7435

square

#1B2D74 #741B59 #74621B #1B7435

split-complementary

#1B2D74 #74351B #59741B

monochromatic

#060A19 #0F1A42 #1B2D74 #2740A6 #3957D1

Accessibility & contrast

On white

12.54

#1B2D74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1B2D74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D74

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D74	#FFFFFF	#000000	##FFFFFF
##1B2D74	1.00	12.54	1.67	12.54
#FFFFFF	12.54	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003876

Deuteranopia (green-blind)

#003073

Tritanopia (blue-blind)

#003F4B

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b2d74;
/* rgb */ color: rgb(27, 45, 116);
/* oklch */ color: oklch(33.1% 0.124 268.0);

Tailwind

colors: {
  custom: {
    50: '#66659d',
    500: '#1b2d74',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d74;
$custom-light: #66659d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d74",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 116
  },
  "hsl": {
    "h": 227.865,
    "s": 62.238,
    "l": 28.039
  },
  "oklch": {
    "l": 0.33058,
    "c": 0.12401,
    "h": 268
  },
  "luminance": 0.03371
}

Semantic roles & 50–950 ramp

primary

#1B2D74

secondary

#A99442

accent

#C442E5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #1B2D74

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

Preview Lab → · Contrast checker → · Palette generator →