#063356
Closest named color: Prussian Blue (#1D3557). oklch(31.3% 0.078 247.8), rgb(6, 51, 86).
Aa
White text reads best on this color (12.99:1).
About this color
#063356 is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.078 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.022 away. White text reads best on it, at 12.99:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.61:1 |
| White text | 12.99:1 |
Values
| HEX | #063356 |
| RGB | rgb(6, 51, 86) |
| HSL | hsl(206, 87%, 18%) |
| OKLCH | oklch(31.3% 0.078 247.8) |
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 #063356 | 12.99:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #063356 | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #063356 text on white | 12.99:1 | AAA | Lc 98.9 | Preferred for body text |
| #063356 text on black | 1.61:1 | 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
#EFF6FE
oklch(97% 0.013 251.6)
-
Step 100
100
#DCECFB
oklch(93.6% 0.027 246.3)
-
Step 200
200
#BFDDFA
oklch(88.5% 0.051 247.5)
-
Step 300
300
#90C6FA
oklch(80.8% 0.093 248.1)
-
Step 400
400
#49A7F7
oklch(70.8% 0.147 247.5)
-
Step 500
500
#008EE9
oklch(63.1% 0.169 247.8)
-
Step 600
600
#0077C5
oklch(55.6% 0.149 247.9)
-
Step 700
700
#0064A7
oklch(49.1% 0.132 247.9)
-
Step 800
800
#00528A
oklch(42.8% 0.115 247.8)
-
Step 900
900
#004474
oklch(37.7% 0.101 247.8)
-
Step 950
950 (this color)
#063356
oklch(31.3% 0.078 247.8)
#063356 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) | #223557 | 0.027 |
| Deuteranopia (no green cones) | #162E55 | 0.018 |
| Tritanopia (no blue cones) | #003B40 | 0.054 |
| Achromatopsia (no color) | #313131 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #063356
#063356
oklch(31.3% 0.078 247.8)
- #472900
#472900
oklch(31.2% 0.068 68.1)
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 #063356, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.022
- Marine #042E60 ΔE 0.026
- Midnight Green #073B4C ΔE 0.036
- Marine Blue #01386A ΔE 0.036
- Dark Blue Grey #1F3B4D ΔE 0.042
- Gunmetal #293241 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.058
Use #063356 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.