#0648A4
Closest named color: Cobalt (#1E488F). oklch(42.5% 0.161 259.2), rgb(6, 72, 164).
Aa
White text reads best on this color (8.49:1).
About this color
#0648A4 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.161 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.036 away. White text reads best on it, at 8.49:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.47:1 |
| White text | 8.49:1 |
Values
| HEX | #0648A4 |
| RGB | rgb(6, 72, 164) |
| HSL | hsl(215, 93%, 33%) |
| OKLCH | oklch(42.5% 0.161 259.2) |
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 #0648A4 | 8.49:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #0648A4 | 2.47:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #0648A4 text on white | 8.49:1 | AAA | Lc 88.5 | Fine for body text |
| #0648A4 text on black | 2.47:1 | Fails | Lc -13.7 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DBFC
oklch(88.6% 0.051 258.4)
-
Step 300
300
#9CC2FE
oklch(80.9% 0.095 259.4)
-
Step 400
400
#65A0FD
oklch(70.7% 0.15 259.2)
-
Step 500
500
#3985FB
oklch(63.2% 0.192 259.2)
-
Step 600
600
#0F6AEA
oklch(55.5% 0.209 259.3)
-
Step 700
700
#0058CB
oklch(49.1% 0.193 259.2)
-
Step 800
800 (this color)
#0648A4
oklch(42.5% 0.161 259.2)
-
Step 900
900
#113E82
oklch(37.7% 0.125 259.1)
-
Step 950
950
#0C254C
oklch(27% 0.079 259.2)
#0648A4 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) | #0054A7 | 0.032 |
| Deuteranopia (no green cones) | #0046A2 | 0.007 |
| Tritanopia (no blue cones) | #005F6F | 0.121 |
| Achromatopsia (no color) | #4D4D4D | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0648A4
#0648A4
oklch(42.5% 0.161 259.2)
- #684800
#684800
oklch(42.6% 0.088 79.5)
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 #0648A4, closest first.
No curated palette has a color within ΔE 0.04 of #0648A4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.036
- Sapphire #2138AB ΔE 0.039
- Dusk Blue #26538D ΔE 0.056
- Blue Blue #2242C7 ΔE 0.060
- Light Navy #155084 ΔE 0.060
- Blueberry #464196 ΔE 0.063
- Deep Sea Blue #015482 ΔE 0.069
- Twilight Blue #0A437A ΔE 0.070
Use #0648A4 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.