#064CA0
Closest named color: Cobalt (#1E488F). oklch(43.1% 0.15 257.4), rgb(6, 76, 160).
Aa
White text reads best on this color (8.23:1).
About this color
#064CA0 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.150 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.030 away. White text reads best on it, at 8.23:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.54:1 |
| White text | 8.23:1 |
Values
| HEX | #064CA0 |
| RGB | rgb(6, 76, 160) |
| HSL | hsl(213, 93%, 33%) |
| OKLCH | oklch(43.1% 0.15 257.4) |
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 #064CA0 | 8.23:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #064CA0 | 2.54:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #064CA0 text on white | 8.23:1 | AAA | Lc 87.8 | Fine for body text |
| #064CA0 text on black | 2.54:1 | Fails | Lc -14.4 | 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 800.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C5DBFA
oklch(88.5% 0.049 256.9)
-
Step 300
300
#9DC3F9
oklch(80.9% 0.087 257.2)
-
Step 400
400
#66A1F7
oklch(70.6% 0.141 257.8)
-
Step 500
500
#3887F3
oklch(63.1% 0.179 257.3)
-
Step 600
600
#0A6EE2
oklch(55.7% 0.195 257.3)
-
Step 700
700
#005BC2
oklch(49% 0.177 257.5)
-
Step 800
800 (this color)
#064CA0
oklch(43.1% 0.15 257.4)
-
Step 900
900
#11407E
oklch(37.8% 0.116 257.2)
-
Step 950
950
#0C264A
oklch(27.1% 0.074 257.4)
#064CA0 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) | #0E55A3 | 0.026 |
| Deuteranopia (no green cones) | #00499E | 0.009 |
| Tritanopia (no blue cones) | #00616E | 0.114 |
| Achromatopsia (no color) | #4F4F4F | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #064CA0
#064CA0
oklch(43.1% 0.15 257.4)
- #6B4800
#6B4800
oklch(43% 0.09 77)
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 #064CA0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.030
- Dusk Blue #26538D ΔE 0.044
- Light Navy #155084 ΔE 0.049
- Sapphire #2138AB ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.058
- Blueberry #464196 ΔE 0.062
- Twilight Blue #0A437A ΔE 0.066
- Light Navy Blue #2E5A88 ΔE 0.067
Use #064CA0 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.