#063475
Closest named color: Marine Blue (#01386A). oklch(34% 0.121 258.8), rgb(6, 52, 117).
Aa
White text reads best on this color (11.96:1).
About this color
#063475 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.121 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.023 away. White text reads best on it, at 11.96:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.75:1 |
| White text | 11.96:1 |
Values
| HEX | #063475 |
| RGB | rgb(6, 52, 117) |
| HSL | hsl(215, 90%, 24%) |
| OKLCH | oklch(34% 0.121 258.8) |
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 #063475 | 11.96:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #063475 | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #063475 text on white | 11.96:1 | AAA | Lc 96.8 | Preferred for body text |
| #063475 text on black | 1.75:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9DC2FC
oklch(80.8% 0.092 259.2)
-
Step 400
400
#66A0FA
oklch(70.6% 0.146 258.9)
-
Step 500
500
#3A85F7
oklch(63% 0.186 258.8)
-
Step 600
600
#126CE6
oklch(55.6% 0.201 258.7)
-
Step 700
700
#0059C8
oklch(49.1% 0.188 258.7)
-
Step 800
800
#0849A2
oklch(42.6% 0.156 258.9)
-
Step 900
900 (this color)
#063475
oklch(34% 0.121 258.8)
-
Step 950
950
#0C254B
oklch(26.9% 0.077 258.8)
#063475 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) | #003C77 | 0.023 |
| Deuteranopia (no green cones) | #003274 | 0.008 |
| Tritanopia (no blue cones) | #00444F | 0.091 |
| Achromatopsia (no color) | #373737 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #063475
#063475
oklch(34% 0.121 258.8)
- #4B3300
#4B3300
oklch(34% 0.071 79.7)
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 #063475, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.023
- Marine #042E60 ΔE 0.040
- Twilight Blue #0A437A ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.055
- Midnight Blue #191970 ΔE 0.065
- Cobalt #1E488F ΔE 0.074
- Royal #0C1793 ΔE 0.076
- Dark Blue Grey #1F3B4D ΔE 0.079
Use #063475 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.