#123C7E#123C7E

#123C7E is a dark, vivid blue. Relative luminance 0.049; OKLCH L 36.9% C 0.121 H 259.5°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#123C7E
RGB	rgb(18, 60, 126)
HSL	hsl(217, 75%, 28%)
HSV	hsv(217, 86%, 49%)
CMYK	cmyk(85.7%, 52.4%, 0%, 50.6%)
CIE-LAB	lab(26.35, 12.36, -41.38)
CIE-LCH	lch(26.35, 43.19, 286.63°)
OKLab	oklab(36.91% -0.0221 -0.1192)
OKLCH	oklch(36.91% 0.121 259.5)
XYZ	xyz(5.6298, 4.8660, 20.3771)
Luminance	0.0487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123C7E #7E5412

analogous

#12727E #123C7E #1E127E

triadic

#123C7E #7E123C #3C7E12

tetradic

#123C7E #7E1272 #7E5412 #127E1E

square

#123C7E #7E1272 #7E5412 #127E1E

split-complementary

#123C7E #7E1E12 #727E12

monochromatic

#040D1B #0A2248 #123C7E #1A55B4 #2A71E1

Accessibility & contrast

On white

10.64

#123C7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#123C7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C7E

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123C7E	#FFFFFF	#000000	##FFFFFF
##123C7E	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114380

Deuteranopia (green-blind)

#003A7D

Tritanopia (blue-blind)

#004C57

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #123c7e;
/* rgb */ color: rgb(18, 60, 126);
/* oklch */ color: oklch(36.9% 0.121 259.5);

Tailwind

colors: {
  custom: {
    50: '#6571a4',
    500: '#123c7e',
    950: '#000000',
  },
}

SCSS

$custom: #123c7e;
$custom-light: #6571a4;
$custom-dark: #000000;

JSON

{
  "hex": "#123c7e",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 126
  },
  "hsl": {
    "h": 216.667,
    "s": 75,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36907,
    "c": 0.12123,
    "h": 259.5
  },
  "luminance": 0.04867
}

Semantic roles & 50–950 ramp

primary

#123C7E

secondary

#B48438

accent

#A936F2

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #123C7E

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

Preview Lab → · Contrast checker → · Palette generator →