#1B438E#1B438E

#1B438E is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.1% C 0.133 H 261.5°. Best body text is #FFFFFF at 9.38:1 contrast (WCAG AA passes).

Color values

HEX	#1B438E
RGB	rgb(27, 67, 142)
HSL	hsl(219, 68%, 33%)
HSV	hsv(219, 81%, 56%)
CMYK	cmyk(81%, 52.8%, 0%, 44.3%)
CIE-LAB	lab(29.91, 15.03, -45.55)
CIE-LCH	lch(29.91, 47.97, 288.26°)
OKLab	oklab(40.09% -0.0196 -0.1312)
OKLCH	oklch(40.09% 0.133 261.5)
XYZ	xyz(7.3399, 6.1995, 26.3957)
Luminance	0.0620 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B438E #8E661B

analogous

#1B7C8E #1B438E #2C1B8E

triadic

#1B438E #8E1B43 #438E1B

tetradic

#1B438E #8E1B7C #8E661B #1B8E2C

square

#1B438E #8E1B7C #8E661B #1B8E2C

split-complementary

#1B438E #8E2C1B #7C8E1B

monochromatic

#071227 #112B5B #1B438E #255BC1 #477BDC

Accessibility & contrast

On white

9.38

#1B438E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1B438E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B438E

9.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B438E	#FFFFFF	#000000	##FFFFFF
##1B438E	1.00	9.38	2.24	9.38
#FFFFFF	9.38	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104C91

Deuteranopia (green-blind)

#00418D

Tritanopia (blue-blind)

#005562

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b438e;
/* rgb */ color: rgb(27, 67, 142);
/* oklch */ color: oklch(40.1% 0.133 261.5);

Tailwind

colors: {
  custom: {
    50: '#6b76b0',
    500: '#1b438e',
    950: '#000000',
  },
}

SCSS

$custom: #1b438e;
$custom-light: #6b76b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b438e",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 142
  },
  "hsl": {
    "h": 219.13,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.40086,
    "c": 0.13265,
    "h": 261.5
  },
  "luminance": 0.062
}

Semantic roles & 50–950 ramp

primary

#1B438E

secondary

#BE9447

accent

#AE3DEB

background

#F6F7FA

surface

#ECEDF5

border

#C7C8CF

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1B438E

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

Preview Lab → · Contrast checker → · Palette generator →