#1C315C
Closest named color: Prussian Blue (#1D3557). oklch(32% 0.081 263), rgb(28, 49, 92).
Aa
White text reads best on this color (12.77:1).
About this color
#1C315C is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.081 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.017 away. White text reads best on it, at 12.77:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.64:1 |
| White text | 12.77:1 |
Values
| HEX | #1C315C |
| RGB | rgb(28, 49, 92) |
| HSL | hsl(220, 53%, 24%) |
| OKLCH | oklch(32% 0.081 263) |
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 #1C315C | 12.77:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #1C315C | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #1C315C text on white | 12.77:1 | AAA | Lc 98.7 | Preferred for body text |
| #1C315C text on black | 1.64:1 | 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 950.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C7DAFD
oklch(88.5% 0.053 262.7)
-
Step 300
300
#A0C1FF
oklch(80.9% 0.095 262.7)
-
Step 400
400
#6D9EFF
oklch(70.8% 0.152 262.8)
-
Step 500
500
#4681FE
oklch(63% 0.196 263)
-
Step 600
600
#2966EE
oklch(55.5% 0.215 263.1)
-
Step 700
700
#1D54CF
oklch(49.1% 0.199 263)
-
Step 800
800
#1946A7
oklch(42.8% 0.164 262.8)
-
Step 900
900
#1A3C84
oklch(37.7% 0.128 262.8)
-
Step 950
950 (this color)
#1C315C
oklch(32% 0.081 263)
#1C315C 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) | #1D355E | 0.013 |
| Deuteranopia (no green cones) | #132F5B | 0.013 |
| Tritanopia (no blue cones) | #003B42 | 0.067 |
| Achromatopsia (no color) | #323232 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C315C
#1C315C
oklch(32% 0.081 263)
- #432F00
#432F00
oklch(32% 0.066 82.9)
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 #1C315C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.017
- Marine #042E60 ΔE 0.025
- Marine Blue #01386A ΔE 0.032
- Dark Blue Grey #1F3B4D ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.049
- Midnight Green #073B4C ΔE 0.050
- Gunmetal #293241 ΔE 0.052
- Oxford Blue #1B263B ΔE 0.064
Use #1C315C 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.