#1B2D7B#1B2D7B

#1B2D7B is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.7% C 0.134 H 268.2°. Best body text is #FFFFFF at 12.30:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D7B
RGB	rgb(27, 45, 123)
HSL	hsl(229, 64%, 29%)
HSV	hsv(229, 78%, 48%)
CMYK	cmyk(78%, 63.4%, 0%, 51.8%)
CIE-LAB	lab(22.09, 22.74, -46.40)
CIE-LCH	lch(22.09, 51.67, 296.10°)
OKLab	oklab(33.71% -0.0043 -0.1341)
OKLCH	oklch(33.71% 0.134 268.2)
XYZ	xyz(4.9643, 3.5393, 19.1566)
Luminance	0.0354 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D7B #7B691B

analogous

#1B5D7B #1B2D7B #391B7B

triadic

#1B2D7B #7B1B2D #2D7B1B

tetradic

#1B2D7B #7B1B5D #7B691B #1B7B39

square

#1B2D7B #7B1B5D #7B691B #1B7B39

split-complementary

#1B2D7B #7B391B #5D7B1B

monochromatic

#060919 #101B49 #1B2D7B #263FAD #3C59D4

Accessibility & contrast

On white

12.30

#1B2D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1B2D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D7B

12.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D7B	#FFFFFF	#000000	##FFFFFF
##1B2D7B	1.00	12.30	1.71	12.30
#FFFFFF	12.30	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00397E

Deuteranopia (green-blind)

#003079

Tritanopia (blue-blind)

#00414F

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b2d7b;
/* rgb */ color: rgb(27, 45, 123);
/* oklch */ color: oklch(33.7% 0.134 268.2);

Tailwind

colors: {
  custom: {
    50: '#6865a2',
    500: '#1b2d7b',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d7b;
$custom-light: #6865a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d7b",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 123
  },
  "hsl": {
    "h": 228.75,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.33709,
    "c": 0.13415,
    "h": 268.2
  },
  "luminance": 0.0354
}

Semantic roles & 50–950 ramp

primary

#1B2D7B

secondary

#AF9B43

accent

#C841E7

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #1B2D7B

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

Preview Lab → · Contrast checker → · Palette generator →