#1A377C#1A377C

#1A377C is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.9% C 0.123 H 264.0°. Best body text is #FFFFFF at 11.16:1 contrast (WCAG AA passes).

Color values

HEX	#1A377C
RGB	rgb(26, 55, 124)
HSL	hsl(222, 65%, 29%)
HSV	hsv(222, 79%, 49%)
CMYK	cmyk(79%, 55.6%, 0%, 51.4%)
CIE-LAB	lab(24.97, 15.95, -42.34)
CIE-LCH	lch(24.97, 45.25, 290.65°)
OKLab	oklab(35.89% -0.0128 -0.122)
OKLCH	oklch(35.89% 0.123 264)
XYZ	xyz(5.4290, 4.4066, 19.6293)
Luminance	0.0441 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A377C #7C5F1A

analogous

#1A687C #1A377C #2E1A7C

triadic

#1A377C #7C1A37 #377C1A

tetradic

#1A377C #7C1A68 #7C5F1A #1A7C2E

square

#1A377C #7C1A68 #7C5F1A #1A7C2E

split-complementary

#1A377C #7C2E1A #687C1A

monochromatic

#050B19 #0F2149 #1A377C #254DAF #3B69D6

Accessibility & contrast

On white

11.16

#1A377C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1A377C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A377C

11.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A377C	#FFFFFF	#000000	##FFFFFF
##1A377C	1.00	11.16	1.88	11.16
#FFFFFF	11.16	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02407E

Deuteranopia (green-blind)

#00377B

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1a377c;
/* rgb */ color: rgb(26, 55, 124);
/* oklch */ color: oklch(35.9% 0.123 264.0);

Tailwind

colors: {
  custom: {
    50: '#676da2',
    500: '#1a377c',
    950: '#000000',
  },
}

SCSS

$custom: #1a377c;
$custom-light: #676da2;
$custom-dark: #000000;

JSON

{
  "hex": "#1a377c",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 124
  },
  "hsl": {
    "h": 222.245,
    "s": 65.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.35887,
    "c": 0.12267,
    "h": 264
  },
  "luminance": 0.04407
}

Semantic roles & 50–950 ramp

primary

#1A377C

secondary

#B08F42

accent

#B640E8

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1A377C

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

Preview Lab → · Contrast checker → · Palette generator →