#1B3D98#1B3D98

#1B3D98 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.6% C 0.154 H 264.6°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#1B3D98
RGB	rgb(27, 61, 152)
HSL	hsl(224, 70%, 35%)
HSV	hsv(224, 82%, 60%)
CMYK	cmyk(82.2%, 59.9%, 0%, 40.4%)
CIE-LAB	lab(29.00, 23.20, -53.16)
CIE-LCH	lch(29.00, 58.00, 293.58°)
OKLab	oklab(39.64% -0.0145 -0.1537)
OKLCH	oklch(39.64% 0.154 264.6)
XYZ	xyz(7.7862, 5.8366, 30.4159)
Luminance	0.0584 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3D98 #98761B

analogous

#1B7B98 #1B3D98 #381B98

triadic

#1B3D98 #981B3D #3D981B

tetradic

#1B3D98 #981B7B #98761B #1B9838

square

#1B3D98 #981B7B #98761B #1B9838

split-complementary

#1B3D98 #98381B #7B981B

monochromatic

#091330 #122864 #1B3D98 #2452CC #4E75E0

Accessibility & contrast

On white

9.69

#1B3D98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1B3D98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3D98

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3D98	#FFFFFF	#000000	##FFFFFF
##1B3D98	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9B

Deuteranopia (green-blind)

#003F96

Tritanopia (blue-blind)

#005464

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b3d98;
/* rgb */ color: rgb(27, 61, 152);
/* oklch */ color: oklch(39.6% 0.154 264.6);

Tailwind

colors: {
  custom: {
    50: '#6e72b7',
    500: '#1b3d98',
    950: '#000000',
  },
}

SCSS

$custom: #1b3d98;
$custom-light: #6e72b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3d98",
  "rgb": {
    "r": 27,
    "g": 61,
    "b": 152
  },
  "hsl": {
    "h": 223.68,
    "s": 69.832,
    "l": 35.098
  },
  "oklch": {
    "l": 0.39644,
    "c": 0.15435,
    "h": 264.6
  },
  "luminance": 0.05837
}

Semantic roles & 50–950 ramp

primary

#1B3D98

secondary

#C2A24D

accent

#BC3BED

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3D98

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

Preview Lab → · Contrast checker → · Palette generator →