#1A387C#1A387C

#1A387C is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.1% C 0.121 H 263.6°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#1A387C
RGB	rgb(26, 56, 124)
HSL	hsl(222, 65%, 29%)
HSV	hsv(222, 79%, 49%)
CMYK	cmyk(79%, 54.8%, 0%, 51.4%)
CIE-LAB	lab(25.27, 15.25, -41.86)
CIE-LCH	lch(25.27, 44.55, 290.01°)
OKLab	oklab(36.11% -0.0136 -0.1206)
OKLCH	oklch(36.11% 0.121 263.6)
XYZ	xyz(5.4770, 4.5026, 19.6453)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A387C #7C5E1A

analogous

#1A697C #1A387C #2D1A7C

triadic

#1A387C #7C1A38 #387C1A

tetradic

#1A387C #7C1A69 #7C5E1A #1A7C2D

square

#1A387C #7C1A69 #7C5E1A #1A7C2D

split-complementary

#1A387C #7C2D1A #697C1A

monochromatic

#050B19 #0F2149 #1A387C #254FAF #3B6AD6

Accessibility & contrast

On white

11.05

#1A387C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#1A387C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A387C

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A387C	#FFFFFF	#000000	##FFFFFF
##1A387C	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#06417E

Deuteranopia (green-blind)

#00387B

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1a387c;
/* rgb */ color: rgb(26, 56, 124);
/* oklch */ color: oklch(36.1% 0.121 263.6);

Tailwind

colors: {
  custom: {
    50: '#676ea2',
    500: '#1a387c',
    950: '#000000',
  },
}

SCSS

$custom: #1a387c;
$custom-light: #676ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#1a387c",
  "rgb": {
    "r": 26,
    "g": 56,
    "b": 124
  },
  "hsl": {
    "h": 221.633,
    "s": 65.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36111,
    "c": 0.12134,
    "h": 263.6
  },
  "luminance": 0.04503
}

Semantic roles & 50–950 ramp

primary

#1A387C

secondary

#B08E42

accent

#B540E8

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1A387C

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

Preview Lab → · Contrast checker → · Palette generator →