#2648A1
Closest named color: Cobalt (#1E488F). oklch(43.1% 0.15 264.9), rgb(38, 72, 161).
Aa
White text reads best on this color (8.32:1).
About this color
#2648A1 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.150 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.031 away. White text reads best on it, at 8.32:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.52:1 |
| White text | 8.32:1 |
Values
| HEX | #2648A1 |
| RGB | rgb(38, 72, 161) |
| HSL | hsl(223, 62%, 39%) |
| OKLCH | oklch(43.1% 0.15 264.9) |
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 #2648A1 | 8.32:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #2648A1 | 2.52:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #2648A1 text on white | 8.32:1 | AAA | Lc 88.3 | Fine for body text |
| #2648A1 text on black | 2.52:1 | Fails | Lc -13.9 | 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
#F2F6FE
oklch(97.2% 0.012 264.5)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#C9D9FA
oklch(88.4% 0.049 264.9)
-
Step 300
300
#A5C0FA
oklch(80.9% 0.088 265.1)
-
Step 400
400
#759DF8
oklch(70.6% 0.141 265)
-
Step 500
500
#5382F4
oklch(63.1% 0.178 264.9)
-
Step 600
600
#3968E3
oklch(55.6% 0.194 264.9)
-
Step 700
700
#2C56C5
oklch(49.2% 0.18 264.8)
-
Step 800
800 (this color)
#2648A1
oklch(43.1% 0.15 264.9)
-
Step 900
900
#223C7F
oklch(37.6% 0.118 265.2)
-
Step 950
950
#14244A
oklch(27% 0.074 264.7)
#2648A1 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) | #0054A4 | 0.034 |
| Deuteranopia (no green cones) | #00499F | 0.022 |
| Tritanopia (no blue cones) | #005E6D | 0.119 |
| Achromatopsia (no color) | #4E4E4E | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2648A1
#2648A1
oklch(43.1% 0.15 264.9)
- #664B00
#664B00
oklch(43% 0.088 84.8)
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 #2648A1, closest first.
No curated palette has a color within ΔE 0.04 of #2648A1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.031
- Sapphire #2138AB ΔE 0.043
- Blueberry #464196 ΔE 0.044
- Dusk Blue #26538D ΔE 0.048
- Light Navy #155084 ΔE 0.057
- Dark Slate Blue #483D8B ΔE 0.059
- Blue Blue #2242C7 ΔE 0.062
- Deep Sea Blue #015482 ΔE 0.068
Use #2648A1 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.