#1B2D7F#1B2D7F

#1B2D7F is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.1% C 0.140 H 268.2°. Best body text is #FFFFFF at 12.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D7F
RGB	rgb(27, 45, 127)
HSL	hsl(229, 65%, 30%)
HSV	hsv(229, 79%, 50%)
CMYK	cmyk(78.7%, 64.6%, 0%, 50.2%)
CIE-LAB	lab(22.45, 24.32, -48.34)
CIE-LCH	lch(22.45, 54.12, 296.71°)
OKLab	oklab(34.09% -0.0043 -0.1398)
OKLCH	oklch(34.09% 0.14 268.2)
XYZ	xyz(5.2198, 3.6415, 20.5023)
Luminance	0.0364 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D7F #7F6D1B

analogous

#1B5F7F #1B2D7F #3B1B7F

triadic

#1B2D7F #7F1B2D #2D7F1B

tetradic

#1B2D7F #7F1B5F #7F6D1B #1B7F3B

square

#1B2D7F #7F1B5F #7F6D1B #1B7F3B

split-complementary

#1B2D7F #7F3B1B #5F7F1B

monochromatic

#06091A #101B4D #1B2D7F #263FB1 #3E5AD6

Accessibility & contrast

On white

12.15

#1B2D7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1B2D7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D7F

12.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D7F	#FFFFFF	#000000	##FFFFFF
##1B2D7F	1.00	12.15	1.73	12.15
#FFFFFF	12.15	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A82

Deuteranopia (green-blind)

#00317D

Tritanopia (blue-blind)

#004251

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b2d7f;
/* rgb */ color: rgb(27, 45, 127);
/* oklch */ color: oklch(34.1% 0.140 268.2);

Tailwind

colors: {
  custom: {
    50: '#6965a5',
    500: '#1b2d7f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d7f;
$custom-light: #6965a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d7f",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 127
  },
  "hsl": {
    "h": 229.2,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.3409,
    "c": 0.13983,
    "h": 268.2
  },
  "luminance": 0.03642
}

Semantic roles & 50–950 ramp

primary

#1B2D7F

secondary

#B39F43

accent

#CA40E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #1B2D7F

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

Preview Lab → · Contrast checker → · Palette generator →