#1C338F#1C338F

#1C338F is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.8% C 0.154 H 267.2°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#1C338F
RGB	rgb(28, 51, 143)
HSL	hsl(228, 67%, 34%)
HSV	hsv(228, 80%, 56%)
CMYK	cmyk(80.4%, 64.3%, 0%, 43.9%)
CIE-LAB	lab(25.55, 26.60, -53.26)
CIE-LCH	lch(25.55, 59.53, 296.54°)
OKLab	oklab(36.85% -0.0076 -0.1541)
OKLCH	oklch(36.85% 0.154 267.2)
XYZ	xyz(6.6189, 4.5969, 26.5197)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C338F #8F781C

analogous

#1C6C8F #1C338F #3E1C8F

triadic

#1C338F #8F1C33 #338F1C

tetradic

#1C338F #8F1C6C #8F781C #1C8F3E

square

#1C338F #8F1C6C #8F781C #1C8F3E

split-complementary

#1C338F #8F3E1C #6C8F1C

monochromatic

#080E29 #12215C #1C338F #2645C2 #4A67DC

Accessibility & contrast

On white

10.94

#1C338F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1C338F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C338F

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C338F	#FFFFFF	#000000	##FFFFFF
##1C338F	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004292

Deuteranopia (green-blind)

#00378D

Tritanopia (blue-blind)

#004B5C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1c338f;
/* rgb */ color: rgb(28, 51, 143);
/* oklch */ color: oklch(36.8% 0.154 267.2);

Tailwind

colors: {
  custom: {
    50: '#6d6ab1',
    500: '#1c338f',
    950: '#000000',
  },
}

SCSS

$custom: #1c338f;
$custom-light: #6d6ab1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c338f",
  "rgb": {
    "r": 28,
    "g": 51,
    "b": 143
  },
  "hsl": {
    "h": 228,
    "s": 67.251,
    "l": 33.529
  },
  "oklch": {
    "l": 0.36849,
    "c": 0.15426,
    "h": 267.2
  },
  "luminance": 0.04598
}

Semantic roles & 50–950 ramp

primary

#1C338F

secondary

#BEA649

accent

#C83EEA

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1C338F

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

Preview Lab → · Contrast checker → · Palette generator →