#1C2D75
Closest named color: Marine Blue (#01386A). oklch(33.2% 0.125 268.5), rgb(28, 45, 117).
Aa
White text reads best on this color (12.48:1).
About this color
#1C2D75 is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.125 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.040 away. White text reads best on it, at 12.48:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.68:1 |
| White text | 12.48:1 |
Values
| HEX | #1C2D75 |
| RGB | rgb(28, 45, 117) |
| HSL | hsl(229, 61%, 28%) |
| OKLCH | oklch(33.2% 0.125 268.5) |
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 #1C2D75 | 12.48:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #1C2D75 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #1C2D75 text on white | 12.48:1 | AAA | Lc 97.9 | Preferred for body text |
| #1C2D75 text on black | 1.68:1 | Fails | Lc 0.0 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFD
oklch(93.7% 0.027 267.5)
-
Step 200
200
#CBD9FD
oklch(88.6% 0.052 268.5)
-
Step 300
300
#A7BFFE
oklch(81% 0.093 268.2)
-
Step 400
400
#799AFE
oklch(70.6% 0.151 268.6)
-
Step 500
500
#5A7EFC
oklch(63.2% 0.191 268.5)
-
Step 600
600
#4263EB
oklch(55.7% 0.208 268.4)
-
Step 700
700
#3550CC
oklch(49% 0.194 268.6)
-
Step 800
800
#2C43A5
oklch(42.7% 0.16 268.6)
-
Step 900
900 (this color)
#1C2D75
oklch(33.2% 0.125 268.5)
-
Step 950
950
#16234D
oklch(27.1% 0.079 267.9)
#1C2D75 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) | #003877 | 0.032 |
| Deuteranopia (no green cones) | #003074 | 0.021 |
| Tritanopia (no blue cones) | #003F4C | 0.100 |
| Achromatopsia (no color) | #343434 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C2D75
#1C2D75
oklch(33.2% 0.125 268.5)
- #443300
#443300
oklch(33.1% 0.068 88.1)
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 #1C2D75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.040
- Marine #042E60 ΔE 0.043
- Midnight Blue #191970 ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.060
- Twilight Blue #0A437A ΔE 0.061
- Royal #0C1793 ΔE 0.068
- Cobalt #1E488F ΔE 0.084
- Dark Blue #00008B ΔE 0.087
Use #1C2D75 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.