#123A7E#123A7E

#123A7E is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.4% C 0.124 H 260.4°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#123A7E
RGB	rgb(18, 58, 126)
HSL	hsl(218, 75%, 28%)
HSV	hsv(218, 86%, 49%)
CMYK	cmyk(85.7%, 54%, 0%, 50.6%)
CIE-LAB	lab(25.74, 13.78, -42.36)
CIE-LCH	lch(25.74, 44.55, 288.02°)
OKLab	oklab(36.45% -0.0206 -0.1221)
OKLCH	oklch(36.45% 0.124 260.4)
XYZ	xyz(5.5270, 4.6604, 20.3429)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123A7E #7E5612

analogous

#12707E #123A7E #20127E

triadic

#123A7E #7E123A #3A7E12

tetradic

#123A7E #7E1270 #7E5612 #127E20

square

#123A7E #7E1270 #7E5612 #127E20

split-complementary

#123A7E #7E2012 #707E12

monochromatic

#040C1B #0A2148 #123A7E #1A53B4 #2A6EE1

Accessibility & contrast

On white

10.87

#123A7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#123A7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123A7E

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123A7E	#FFFFFF	#000000	##FFFFFF
##123A7E	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#094280

Deuteranopia (green-blind)

#00387D

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #123a7e;
/* rgb */ color: rgb(18, 58, 126);
/* oklch */ color: oklch(36.4% 0.124 260.4);

Tailwind

colors: {
  custom: {
    50: '#656fa4',
    500: '#123a7e',
    950: '#000000',
  },
}

SCSS

$custom: #123a7e;
$custom-light: #656fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#123a7e",
  "rgb": {
    "r": 18,
    "g": 58,
    "b": 126
  },
  "hsl": {
    "h": 217.778,
    "s": 75,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36445,
    "c": 0.12385,
    "h": 260.4
  },
  "luminance": 0.04661
}

Semantic roles & 50–950 ramp

primary

#123A7E

secondary

#B48638

accent

#AC36F2

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #123A7E

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

Preview Lab → · Contrast checker → · Palette generator →