#1A377B#1A377B

#1A377B is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.8% C 0.121 H 263.9°. Best body text is #FFFFFF at 11.19:1 contrast (WCAG AA passes).

Color values

HEX	#1A377B
RGB	rgb(26, 55, 123)
HSL	hsl(222, 65%, 29%)
HSV	hsv(222, 79%, 48%)
CMYK	cmyk(78.9%, 55.3%, 0%, 51.8%)
CIE-LAB	lab(24.89, 15.54, -41.84)
CIE-LCH	lch(24.89, 44.63, 290.38°)
OKLab	oklab(35.8% -0.0129 -0.1205)
OKLCH	oklch(35.8% 0.121 263.9)
XYZ	xyz(5.3661, 4.3814, 19.2979)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A377B #7B5E1A

analogous

#1A687B #1A377B #2E1A7B

triadic

#1A377B #7B1A37 #377B1A

tetradic

#1A377B #7B1A68 #7B5E1A #1A7B2E

square

#1A377B #7B1A68 #7B5E1A #1A7B2E

split-complementary

#1A377B #7B2E1A #687B1A

monochromatic

#050B19 #0F2048 #1A377B #254EAE #3A68D5

Accessibility & contrast

On white

11.19

#1A377B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1A377B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A377B

11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A377B	#FFFFFF	#000000	##FFFFFF
##1A377B	1.00	11.19	1.88	11.19
#FFFFFF	11.19	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#04407D

Deuteranopia (green-blind)

#00377A

Tritanopia (blue-blind)

#004853

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1a377b;
/* rgb */ color: rgb(26, 55, 123);
/* oklch */ color: oklch(35.8% 0.121 263.9);

Tailwind

colors: {
  custom: {
    50: '#666da2',
    500: '#1a377b',
    950: '#000000',
  },
}

SCSS

$custom: #1a377b;
$custom-light: #666da2;
$custom-dark: #000000;

JSON

{
  "hex": "#1a377b",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 123
  },
  "hsl": {
    "h": 222.062,
    "s": 65.101,
    "l": 29.216
  },
  "oklch": {
    "l": 0.35803,
    "c": 0.1212,
    "h": 263.9
  },
  "luminance": 0.04382
}

Semantic roles & 50–950 ramp

primary

#1A377B

secondary

#AF8E42

accent

#B640E8

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1A377B

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

Preview Lab → · Contrast checker → · Palette generator →