#1C308E#1C308E

#1C308E is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.2% C 0.157 H 267.9°. Best body text is #FFFFFF at 11.27:1 contrast (WCAG AA passes).

Color values

HEX	#1C308E
RGB	rgb(28, 48, 142)
HSL	hsl(229, 67%, 33%)
HSV	hsv(229, 80%, 56%)
CMYK	cmyk(80.3%, 66.2%, 0%, 44.3%)
CIE-LAB	lab(24.68, 28.24, -54.07)
CIE-LCH	lch(24.68, 61.00, 297.58°)
OKLab	oklab(36.18% -0.0058 -0.1565)
OKLCH	oklch(36.18% 0.157 267.9)
XYZ	xyz(6.4166, 4.3130, 26.0803)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C308E #8E7A1C

analogous

#1C698E #1C308E #411C8E

triadic

#1C308E #8E1C30 #308E1C

tetradic

#1C308E #8E1C69 #8E7A1C #1C8E41

square

#1C308E #8E1C69 #8E7A1C #1C8E41

split-complementary

#1C308E #8E411C #698E1C

monochromatic

#080D28 #121F5B #1C308E #2641C1 #4963DB

Accessibility & contrast

On white

11.27

#1C308E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1C308E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C308E

11.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C308E	#FFFFFF	#000000	##FFFFFF
##1C308E	1.00	11.27	1.86	11.27
#FFFFFF	11.27	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004091

Deuteranopia (green-blind)

#00358C

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1c308e;
/* rgb */ color: rgb(28, 48, 142);
/* oklch */ color: oklch(36.2% 0.157 267.9);

Tailwind

colors: {
  custom: {
    50: '#6d68b0',
    500: '#1c308e',
    950: '#000000',
  },
}

SCSS

$custom: #1c308e;
$custom-light: #6d68b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c308e",
  "rgb": {
    "r": 28,
    "g": 48,
    "b": 142
  },
  "hsl": {
    "h": 229.474,
    "s": 67.059,
    "l": 33.333
  },
  "oklch": {
    "l": 0.36177,
    "c": 0.15659,
    "h": 267.9
  },
  "luminance": 0.04314
}

Semantic roles & 50–950 ramp

primary

#1C308E

secondary

#BDA949

accent

#CC3EEA

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1C308E

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

Preview Lab → · Contrast checker → · Palette generator →