#1669EF
Closest named color: Cerulean Blue (#056EEE). oklch(55.8% 0.216 260.4), rgb(22, 105, 239).
Aa
White text reads best on this color (4.88:1).
About this color
#1669EF is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.216 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.012 away. White text reads best on it, at 4.88:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.216) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.30:1 |
| White text | 4.88:1 |
Values
| HEX | #1669EF |
| RGB | rgb(22, 105, 239) |
| HSL | hsl(217, 87%, 51%) |
| OKLCH | oklch(55.8% 0.216 260.4) |
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 #1669EF | 4.88:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #1669EF | 4.30:1 | AA large text | Lc 31.1 | Non-text elements, placeholder text |
| #1669EF text on white | 4.88:1 | AA | Lc 73.0 | Content text, not long reading |
| #1669EF text on black | 4.30:1 | AA large text | Lc -28.7 | Dividers and decoration only |
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 600.
-
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
#C5DAFE
oklch(88.4% 0.055 261.2)
-
Step 300
300
#9DC2FF
oklch(81% 0.096 260.2)
-
Step 400
400
#679FFF
oklch(70.7% 0.153 260.6)
-
Step 500
500
#3B83FF
oklch(63.1% 0.198 260.5)
-
Step 600
600 (this color)
#1669EF
oklch(55.8% 0.216 260.4)
-
Step 700
700
#0556CF
oklch(49.1% 0.2 260.3)
-
Step 800
800
#0B47A8
oklch(42.7% 0.167 260.5)
-
Step 900
900
#133D85
oklch(37.7% 0.13 260.6)
-
Step 950
950
#0C244E
oklch(26.9% 0.083 260.7)
#1669EF 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) | #007BF4 | 0.044 |
| Deuteranopia (no green cones) | #0068EC | 0.008 |
| Tritanopia (no blue cones) | #008BA2 | 0.164 |
| Achromatopsia (no color) | #717171 | 0.216 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1669EF
#1669EF
oklch(55.8% 0.216 260.4)
- #976B00
#976B00
oklch(55.9% 0.116 80.2)
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 #1669EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.012
- Bright Blue #0165FC ΔE 0.023
- Azul #1D5DEC ΔE 0.028
- Neon Blue #4361EE ΔE 0.032
- Royal Blue #4169E1 ΔE 0.035
- Clear Blue #247AFD ΔE 0.048
- Electric Blue #0652FF ΔE 0.056
- Warm Blue #4B57DB ΔE 0.059
Use #1669EF 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.