#1680DF
Closest named color: Water Blue (#0E87CC). oklch(59.5% 0.169 251.9), rgb(22, 128, 223).
Aa
Black text reads best on this color (5.18:1).
About this color
#1680DF is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.169 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.038 away. Black text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.169) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.18:1 |
| White text | 4.04:1 |
Values
| HEX | #1680DF |
| RGB | rgb(22, 128, 223) |
| HSL | hsl(208, 82%, 48%) |
| OKLCH | oklch(59.5% 0.169 251.9) |
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 #1680DF | 4.04:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #1680DF | 5.18:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #1680DF text on white | 4.04:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #1680DF text on black | 5.18:1 | AA | Lc -34.6 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C4DCF7
oklch(88.5% 0.045 251.4)
-
Step 300
300
#9AC5F5
oklch(81% 0.082 251.6)
-
Step 400
400
#5FA4F0
oklch(70.6% 0.132 252.2)
-
Step 500
500 (this color)
#1680DF
oklch(59.5% 0.169 251.9)
-
Step 600
600
#0074D0
oklch(55.6% 0.166 251.9)
-
Step 700
700
#0061B0
oklch(49% 0.147 252)
-
Step 800
800
#004F92
oklch(42.6% 0.129 252.3)
-
Step 900
900
#03427A
oklch(37.7% 0.111 252.2)
-
Step 950
950
#072747
oklch(26.9% 0.07 252)
#1680DF 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) | #4F87E3 | 0.044 |
| Deuteranopia (no green cones) | #2776DD | 0.026 |
| Tritanopia (no blue cones) | #0097A4 | 0.125 |
| Achromatopsia (no color) | #7E7E7E | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1680DF
#1680DF
oklch(59.5% 0.169 251.9)
- #AD7000
#AD7000
oklch(59.6% 0.128 71.8)
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 #1680DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.038
- Clear Blue #247AFD ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.050
- Windows Blue #3778BF ΔE 0.050
- Cerulean Blue #056EEE ΔE 0.055
- Royal Blue #4169E1 ΔE 0.060
- Dodger Blue #1E90FF ΔE 0.061
- Soft Blue #6488EA ΔE 0.068
Use #1680DF 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.