#1A397B#1A397B

#1A397B is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.3% C 0.119 H 262.9°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#1A397B
RGB	rgb(26, 57, 123)
HSL	hsl(221, 65%, 29%)
HSV	hsv(221, 79%, 48%)
CMYK	cmyk(78.9%, 53.7%, 0%, 51.8%)
CIE-LAB	lab(25.49, 14.13, -40.87)
CIE-LCH	lch(25.49, 43.25, 289.07°)
OKLab	oklab(36.25% -0.0146 -0.1176)
OKLCH	oklch(36.25% 0.119 262.9)
XYZ	xyz(5.4630, 4.5753, 19.3303)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A397B #7B5C1A

analogous

#1A6A7B #1A397B #2C1A7B

triadic

#1A397B #7B1A39 #397B1A

tetradic

#1A397B #7B1A6A #7B5C1A #1A7B2C

square

#1A397B #7B1A6A #7B5C1A #1A7B2C

split-complementary

#1A397B #7B2C1A #6A7B1A

monochromatic

#050C19 #0F2248 #1A397B #2550AE #3A6CD5

Accessibility & contrast

On white

10.96

#1A397B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1A397B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A397B

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A397B	#FFFFFF	#000000	##FFFFFF
##1A397B	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D417D

Deuteranopia (green-blind)

#00387A

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1a397b;
/* rgb */ color: rgb(26, 57, 123);
/* oklch */ color: oklch(36.3% 0.119 262.9);

Tailwind

colors: {
  custom: {
    50: '#666ea2',
    500: '#1a397b',
    950: '#000000',
  },
}

SCSS

$custom: #1a397b;
$custom-light: #666ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#1a397b",
  "rgb": {
    "r": 26,
    "g": 57,
    "b": 123
  },
  "hsl": {
    "h": 220.825,
    "s": 65.101,
    "l": 29.216
  },
  "oklch": {
    "l": 0.36255,
    "c": 0.11854,
    "h": 262.9
  },
  "luminance": 0.04576
}

Semantic roles & 50–950 ramp

primary

#1A397B

secondary

#AF8C42

accent

#B240E8

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1A397B

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

Preview Lab → · Contrast checker → · Palette generator →