#1A387B#1A387B

#1A387B is a dark, moderate blue. Relative luminance 0.045; OKLCH L 36.0% C 0.120 H 263.4°. Best body text is #FFFFFF at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#1A387B
RGB	rgb(26, 56, 123)
HSL	hsl(221, 65%, 29%)
HSV	hsv(221, 79%, 48%)
CMYK	cmyk(78.9%, 54.5%, 0%, 51.8%)
CIE-LAB	lab(25.19, 14.84, -41.36)
CIE-LCH	lch(25.19, 43.94, 289.74°)
OKLab	oklab(36.03% -0.0137 -0.1191)
OKLCH	oklch(36.03% 0.12 263.4)
XYZ	xyz(5.4141, 4.4774, 19.3139)
Luminance	0.0448 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A387B #7B5D1A

analogous

#1A697B #1A387B #2C1A7B

triadic

#1A387B #7B1A38 #387B1A

tetradic

#1A387B #7B1A69 #7B5D1A #1A7B2C

square

#1A387B #7B1A69 #7B5D1A #1A7B2C

split-complementary

#1A387B #7B2C1A #697B1A

monochromatic

#050C19 #0F2148 #1A387B #254FAE #3A6AD5

Accessibility & contrast

On white

11.08

#1A387B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#1A387B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A387B

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A387B	#FFFFFF	#000000	##FFFFFF
##1A387B	1.00	11.08	1.90	11.08
#FFFFFF	11.08	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#09407D

Deuteranopia (green-blind)

#00387A

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1a387b;
/* rgb */ color: rgb(26, 56, 123);
/* oklch */ color: oklch(36.0% 0.120 263.4);

Tailwind

colors: {
  custom: {
    50: '#666ea2',
    500: '#1a387b',
    950: '#000000',
  },
}

SCSS

$custom: #1a387b;
$custom-light: #666ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#1a387b",
  "rgb": {
    "r": 26,
    "g": 56,
    "b": 123
  },
  "hsl": {
    "h": 221.443,
    "s": 65.101,
    "l": 29.216
  },
  "oklch": {
    "l": 0.36028,
    "c": 0.11987,
    "h": 263.4
  },
  "luminance": 0.04478
}

Semantic roles & 50–950 ramp

primary

#1A387B

secondary

#AF8D42

accent

#B440E8

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1A387B

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

Preview Lab → · Contrast checker → · Palette generator →