#1C3554
Closest named color: Prussian Blue (#1D3557). oklch(32.5% 0.064 254.7), rgb(28, 53, 84).
Aa
White text reads best on this color (12.45:1).
About this color
#1C3554 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.064 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.006 away. White text reads best on it, at 12.45:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.68:1 |
| White text | 12.45:1 |
Values
| HEX | #1C3554 |
| RGB | rgb(28, 53, 84) |
| HSL | hsl(213, 50%, 22%) |
| OKLCH | oklch(32.5% 0.064 254.7) |
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 #1C3554 | 12.45:1 | AAA | Lc -101.6 | Preferred for body text |
| Black text on #1C3554 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #1C3554 text on white | 12.45:1 | AAA | Lc 98.2 | Preferred for body text |
| #1C3554 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CEDAEB
oklch(88.4% 0.027 257)
-
Step 300
300
#ACC3E0
oklch(80.9% 0.048 254.3)
-
Step 400
400
#80A3D0
oklch(70.6% 0.077 255)
-
Step 500
500
#608CC4
oklch(63.2% 0.098 254.9)
-
Step 600
600
#4675B0
oklch(55.6% 0.106 254.9)
-
Step 700
700
#376297
oklch(49.1% 0.098 254.6)
-
Step 800
800
#2E507B
oklch(42.7% 0.082 255.1)
-
Step 900
900 (this color)
#1C3554
oklch(32.5% 0.064 254.7)
-
Step 950
950
#18273A
oklch(26.9% 0.041 254.8)
#1C3554 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) | #283755 | 0.018 |
| Deuteranopia (no green cones) | #203253 | 0.010 |
| Tritanopia (no blue cones) | #003C40 | 0.053 |
| Achromatopsia (no color) | #343434 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C3554
#1C3554
oklch(32.5% 0.064 254.7)
- #472F06
#472F06
oklch(32.6% 0.064 75.4)
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 #1C3554, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.006
- Dark Blue Grey #1F3B4D ΔE 0.027
- Midnight Green #073B4C ΔE 0.031
- Gunmetal #293241 ΔE 0.036
- Space Cadet #2B2D42 ΔE 0.039
- Marine #042E60 ΔE 0.040
- Marine Blue #01386A ΔE 0.041
- Onyx #343A40 ΔE 0.054
Use #1C3554 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.