#1966F2
Closest named color: Bright Blue (#0165FC). oklch(55.5% 0.223 261.4), rgb(25, 102, 242).
Aa
White text reads best on this color (4.97:1).
About this color
#1966F2 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.223 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Blue (#0165FC), ΔE 0.016 away. White text reads best on it, at 4.97:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.223) |
| Temperature | cool |
| Nearest name | Bright Blue (#0165FC) |
| Black text | 4.22:1 |
| White text | 4.97:1 |
Values
| HEX | #1966F2 |
| RGB | rgb(25, 102, 242) |
| HSL | hsl(219, 89%, 52%) |
| OKLCH | oklch(55.5% 0.223 261.4) |
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 #1966F2 | 4.97:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #1966F2 | 4.22:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #1966F2 text on white | 4.97:1 | AA | Lc 73.6 | Content text, not long reading |
| #1966F2 text on black | 4.22:1 | AA large text | Lc -28.1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400
#699EFF
oklch(70.6% 0.153 261.6)
-
Step 500
500
#3F82FF
oklch(63.1% 0.198 261.5)
-
Step 600
600 (this color)
#1966F2
oklch(55.5% 0.223 261.4)
-
Step 700
700
#0B54D3
oklch(49.2% 0.207 261.4)
-
Step 800
800
#0E46AA
oklch(42.8% 0.17 261.3)
-
Step 900
900
#143C87
oklch(37.7% 0.134 261.5)
-
Step 950
950
#0D244F
oklch(27% 0.084 261.5)
#1966F2 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) | #007AF7 | 0.048 |
| Deuteranopia (no green cones) | #0066EF | 0.009 |
| Tritanopia (no blue cones) | #008AA2 | 0.170 |
| Achromatopsia (no color) | #707070 | 0.223 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1966F2
#1966F2
oklch(55.5% 0.223 261.4)
- #956B00
#956B00
oklch(55.6% 0.115 81.4)
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 #1966F2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Blue #0165FC ΔE 0.016
- Cerulean Blue #056EEE ΔE 0.020
- Azul #1D5DEC ΔE 0.022
- Neon Blue #4361EE ΔE 0.030
- Royal Blue #4169E1 ΔE 0.039
- Electric Blue #0652FF ΔE 0.048
- Clear Blue #247AFD ΔE 0.052
- Warm Blue #4B57DB ΔE 0.057
Use #1966F2 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.