#1B3E76#1B3E76

#1B3E76 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.1% C 0.104 H 259.5°. Best body text is #FFFFFF at 10.51:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E76
RGB	rgb(27, 62, 118)
HSL	hsl(217, 63%, 28%)
HSV	hsv(217, 77%, 46%)
CMYK	cmyk(77.1%, 47.5%, 0%, 53.7%)
CIE-LAB	lab(26.69, 8.70, -35.77)
CIE-LCH	lch(26.69, 36.81, 283.67°)
OKLab	oklab(37.07% -0.0191 -0.1025)
OKLCH	oklch(37.07% 0.104 259.5)
XYZ	xyz(5.4434, 4.9857, 17.8115)
Luminance	0.0499 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E76 #76531B

analogous

#1B6B76 #1B3E76 #251B76

triadic

#1B3E76 #761B3E #3E761B

tetradic

#1B3E76 #761B6B #76531B #1B7625

square

#1B3E76 #761B6B #76531B #1B7625

split-complementary

#1B3E76 #76251B #6B761B

monochromatic

#060D19 #102444 #1B3E76 #2658A8 #3A74D2

Accessibility & contrast

On white

10.51

#1B3E76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#1B3E76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E76

10.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E76	#FFFFFF	#000000	##FFFFFF
##1B3E76	1.00	10.51	2.00	10.51
#FFFFFF	10.51	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214478

Deuteranopia (green-blind)

#0D3B75

Tritanopia (blue-blind)

#004B54

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1b3e76;
/* rgb */ color: rgb(27, 62, 118);
/* oklch */ color: oklch(37.1% 0.104 259.5);

Tailwind

colors: {
  custom: {
    50: '#65729e',
    500: '#1b3e76',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e76;
$custom-light: #65729e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e76",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 118
  },
  "hsl": {
    "h": 216.923,
    "s": 62.759,
    "l": 28.431
  },
  "oklch": {
    "l": 0.37074,
    "c": 0.10427,
    "h": 259.5
  },
  "luminance": 0.04986
}

Semantic roles & 50–950 ramp

primary

#1B3E76

secondary

#AA8242

accent

#A742E6

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1B3E76

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

Preview Lab → · Contrast checker → · Palette generator →