#1648B0
Closest named color: Sapphire (#2138AB). oklch(43.9% 0.174 262.4), rgb(22, 72, 176).
Aa
White text reads best on this color (8.11:1).
About this color
#1648B0 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.174 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.037 away. White text reads best on it, at 8.11:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.58:1 |
| White text | 8.11:1 |
Values
| HEX | #1648B0 |
| RGB | rgb(22, 72, 176) |
| HSL | hsl(221, 78%, 39%) |
| OKLCH | oklch(43.9% 0.174 262.4) |
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 #1648B0 | 8.11:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #1648B0 | 2.58:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #1648B0 text on white | 8.11:1 | AAA | Lc 87.4 | Fine for body text |
| #1648B0 text on black | 2.58:1 | Fails | Lc -14.7 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#DFEAFE
oklch(93.5% 0.03 262.5)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6C9EFF
oklch(70.7% 0.152 262.5)
-
Step 500
500
#4381FF
oklch(63% 0.199 262.5)
-
Step 600
600
#1F65F5
oklch(55.7% 0.226 262.4)
-
Step 700
700
#1352D5
oklch(49.1% 0.21 262.5)
-
Step 800
800 (this color)
#1648B0
oklch(43.9% 0.174 262.4)
-
Step 900
900
#163B88
oklch(37.6% 0.136 262.5)
-
Step 950
950
#0E2350
oklch(26.9% 0.087 263)
#1648B0 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) | #0057B3 | 0.038 |
| Deuteranopia (no green cones) | #0049AE | 0.009 |
| Tritanopia (no blue cones) | #006375 | 0.134 |
| Achromatopsia (no color) | #505050 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1648B0
#1648B0
oklch(43.9% 0.174 262.4)
- #6A4C00
#6A4C00
oklch(43.7% 0.09 82.4)
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 #1648B0, closest first.
No curated palette has a color within ΔE 0.04 of #1648B0.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.037
- Blue Blue #2242C7 ΔE 0.039
- Cobalt #1E488F ΔE 0.054
- Majorelle Blue #3F37C9 ΔE 0.062
- Blueberry #464196 ΔE 0.065
- Dusk Blue #26538D ΔE 0.068
- Light Navy #155084 ΔE 0.077
- Blue With A Hint Of Purple #533CC6 ΔE 0.080
Use #1648B0 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.