#123B81#123B81

#123B81 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.9% C 0.127 H 260.5°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#123B81
RGB	rgb(18, 59, 129)
HSL	hsl(218, 76%, 29%)
HSV	hsv(218, 86%, 51%)
CMYK	cmyk(86%, 54.3%, 0%, 49.4%)
CIE-LAB	lab(26.28, 14.33, -43.38)
CIE-LCH	lch(26.28, 45.69, 288.28°)
OKLab	oklab(36.92% -0.0209 -0.1251)
OKLCH	oklch(36.92% 0.127 260.5)
XYZ	xyz(5.7744, 4.8408, 21.3946)
Luminance	0.0484 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123B81 #815812

analogous

#127381 #123B81 #211281

triadic

#123B81 #81123B #3B8112

tetradic

#123B81 #811273 #815812 #128121

square

#123B81 #811273 #815812 #128121

split-complementary

#123B81 #812112 #738112

monochromatic

#040C1B #0B224B #123B81 #1954B7 #2C6FE2

Accessibility & contrast

On white

10.67

#123B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#123B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B81

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123B81	#FFFFFF	#000000	##FFFFFF
##123B81	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#074383

Deuteranopia (green-blind)

#003980

Tritanopia (blue-blind)

#004C58

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #123b81;
/* rgb */ color: rgb(18, 59, 129);
/* oklch */ color: oklch(36.9% 0.127 260.5);

Tailwind

colors: {
  custom: {
    50: '#6570a6',
    500: '#123b81',
    950: '#000000',
  },
}

SCSS

$custom: #123b81;
$custom-light: #6570a6;
$custom-dark: #000000;

JSON

{
  "hex": "#123b81",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 129
  },
  "hsl": {
    "h": 217.838,
    "s": 75.51,
    "l": 28.824
  },
  "oklch": {
    "l": 0.36924,
    "c": 0.12685,
    "h": 260.5
  },
  "luminance": 0.04842
}

Semantic roles & 50–950 ramp

primary

#123B81

secondary

#B78838

accent

#AD36F2

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #123B81

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

Preview Lab → · Contrast checker → · Palette generator →