#2C396C
Closest named color: Marine Blue (#01386A). oklch(36.1% 0.09 270.6), rgb(44, 57, 108).
Aa
White text reads best on this color (11.00:1).
About this color
#2C396C is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.090 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.039 away. White text reads best on it, at 11.00:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.90:1 |
| White text | 11.00:1 |
Values
| HEX | #2C396C |
| RGB | rgb(44, 57, 108) |
| HSL | hsl(228, 42%, 30%) |
| OKLCH | oklch(36.1% 0.09 270.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #2C396C | 11.00:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #2C396C | 1.90:1 | Fails | Lc 8.6 | Not readable |
| #2C396C text on white | 11.00:1 | AAA | Lc 95.3 | Preferred for body text |
| #2C396C text on black | 1.90:1 | Fails | Lc -7.4 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5EAF7
oklch(93.7% 0.018 269.1)
-
Step 200
200
#D0D8F3
oklch(88.5% 0.038 272.5)
-
Step 300
300
#B0BFED
oklch(80.9% 0.067 270.7)
-
Step 400
400
#879DE4
oklch(70.7% 0.107 270.3)
-
Step 500
500
#6B83DC
oklch(63.2% 0.137 270.7)
-
Step 600
600
#536ACA
oklch(55.5% 0.15 270.7)
-
Step 700
700
#4458AE
oklch(49% 0.138 270.7)
-
Step 800
800
#38498D
oklch(42.8% 0.114 270.4)
-
Step 900
900 (this color)
#2C396C
oklch(36.1% 0.09 270.6)
-
Step 950
950
#1C2442
oklch(26.9% 0.057 270.9)
#2C396C with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #223F6E | 0.020 |
| Deuteranopia (no green cones) | #1A3A6B | 0.021 |
| Tritanopia (no blue cones) | #06444D | 0.079 |
| Achromatopsia (no color) | #3C3C3C | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C396C
#2C396C
oklch(36.1% 0.09 270.6)
- #4C3B00
#4C3B00
oklch(36.1% 0.074 90.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #2C396C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.039
- Twilight Blue #0A437A ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.056
- Marine #042E60 ΔE 0.060
- Dark Blue Grey #1F3B4D ΔE 0.060
- Charcoal #264653 ΔE 0.067
- Cobalt #1E488F ΔE 0.068
Use #2C396C in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.