#13355A
Closest named color: Prussian Blue (#1D3557). oklch(32.5% 0.077 252.9), rgb(19, 53, 90).
Aa
White text reads best on this color (12.46:1).
About this color
#13355A is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.077 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.011 away. White text reads best on it, at 12.46:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.68:1 |
| White text | 12.46:1 |
Values
| HEX | #13355A |
| RGB | rgb(19, 53, 90) |
| HSL | hsl(211, 65%, 21%) |
| OKLCH | oklch(32.5% 0.077 252.9) |
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 #13355A | 12.46:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #13355A | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #13355A text on white | 12.46:1 | AAA | Lc 98.1 | Preferred for body text |
| #13355A 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CBDBEE
oklch(88.5% 0.031 252.7)
-
Step 300
300
#A7C4E6
oklch(81% 0.058 252.6)
-
Step 400
400
#77A4D9
oklch(70.7% 0.092 253.1)
-
Step 500
500
#528CCF
oklch(63% 0.119 253.2)
-
Step 600
600
#3575BC
oklch(55.6% 0.129 253.1)
-
Step 700
700
#2762A2
oklch(49.1% 0.119 253)
-
Step 800
800
#225083
oklch(42.6% 0.099 253.1)
-
Step 900
900 (this color)
#13355A
oklch(32.5% 0.077 252.9)
-
Step 950
950
#14273E
oklch(26.9% 0.05 254.1)
#13355A 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) | #24385C | 0.022 |
| Deuteranopia (no green cones) | #193159 | 0.013 |
| Tritanopia (no blue cones) | #003E43 | 0.059 |
| Achromatopsia (no color) | #343434 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #13355A
#13355A
oklch(32.5% 0.077 252.9)
- #492D00
#492D00
oklch(32.4% 0.069 72.5)
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 #13355A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.011
- Marine Blue #01386A ΔE 0.029
- Marine #042E60 ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.037
- Midnight Green #073B4C ΔE 0.037
- Gunmetal #293241 ΔE 0.048
- Space Cadet #2B2D42 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.063
Use #13355A 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.