#1A397F#1A397F

#1A397F is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.6% C 0.124 H 263.5°. Best body text is #FFFFFF at 10.85:1 contrast (WCAG AA passes).

Color values

HEX	#1A397F
RGB	rgb(26, 57, 127)
HSL	hsl(222, 66%, 30%)
HSV	hsv(222, 80%, 50%)
CMYK	cmyk(79.5%, 55.1%, 0%, 50.2%)
CIE-LAB	lab(25.80, 15.77, -42.90)
CIE-LCH	lch(25.80, 45.70, 290.19°)
OKLab	oklab(36.59% -0.0141 -0.1236)
OKLCH	oklch(36.59% 0.124 263.5)
XYZ	xyz(5.7185, 4.6775, 20.6760)
Luminance	0.0468 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A397F #7F601A

analogous

#1A6C7F #1A397F #2D1A7F

triadic

#1A397F #7F1A39 #397F1A

tetradic

#1A397F #7F1A6C #7F601A #1A7F2D

square

#1A397F #7F1A6C #7F601A #1A7F2D

split-complementary

#1A397F #7F2D1A #6C7F1A

monochromatic

#050B19 #10224C #1A397F #2450B2 #3C6CD7

Accessibility & contrast

On white

10.85

#1A397F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1A397F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A397F

10.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A397F	#FFFFFF	#000000	##FFFFFF
##1A397F	1.00	10.85	1.94	10.85
#FFFFFF	10.85	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#044281

Deuteranopia (green-blind)

#00397E

Tritanopia (blue-blind)

#004A56

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1a397f;
/* rgb */ color: rgb(26, 57, 127);
/* oklch */ color: oklch(36.6% 0.124 263.5);

Tailwind

colors: {
  custom: {
    50: '#676ea5',
    500: '#1a397f',
    950: '#000000',
  },
}

SCSS

$custom: #1a397f;
$custom-light: #676ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#1a397f",
  "rgb": {
    "r": 26,
    "g": 57,
    "b": 127
  },
  "hsl": {
    "h": 221.584,
    "s": 66.013,
    "l": 30
  },
  "oklch": {
    "l": 0.36585,
    "c": 0.12439,
    "h": 263.5
  },
  "luminance": 0.04678
}

Semantic roles & 50–950 ramp

primary

#1A397F

secondary

#B39042

accent

#B53FE9

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1A397F

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

Preview Lab → · Contrast checker → · Palette generator →