#669EF1
Closest named color: Cornflower Blue (#6495ED). oklch(69.7% 0.136 258.1), rgb(102, 158, 241).
Aa
Black text reads best on this color (7.72:1).
About this color
#669EF1 is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.136 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.024 away. Black text reads best on it, at 7.72:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.72:1 |
| White text | 2.71:1 |
Values
| HEX | #669EF1 |
| RGB | rgb(102, 158, 241) |
| HSL | hsl(216, 83%, 67%) |
| OKLCH | oklch(69.7% 0.136 258.1) |
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 #669EF1 | 2.71:1 | Fails | Lc -57.7 | Large or bold text, headings |
| Black text on #669EF1 | 7.72:1 | AAA | Lc 51.6 | Large or bold text, headings |
| #669EF1 text on white | 2.71:1 | Fails | Lc 52.5 | Large or bold text, headings |
| #669EF1 text on black | 7.72:1 | AAA | Lc -49.4 | Large or bold text, headings |
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 400.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBF9
oklch(88.5% 0.047 257.3)
-
Step 300
300
#9FC3F8
oklch(81% 0.085 257.9)
-
Step 400
400 (this color)
#669EF1
oklch(69.7% 0.136 258.1)
-
Step 500
500
#3E87F0
oklch(63.1% 0.174 257.9)
-
Step 600
600
#196EDF
oklch(55.6% 0.189 258)
-
Step 700
700
#095BC2
oklch(49.1% 0.176 258.1)
-
Step 800
800
#0E4B9D
oklch(42.7% 0.146 258.1)
-
Step 900
900
#15407C
oklch(37.8% 0.112 257.7)
-
Step 950
950
#0E2649
oklch(27.1% 0.072 258)
#669EF1 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) | #7CA4F4 | 0.031 |
| Deuteranopia (no green cones) | #6997EF | 0.018 |
| Tritanopia (no blue cones) | #00B1BC | 0.119 |
| Achromatopsia (no color) | #9D9D9D | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669EF1
#669EF1
oklch(69.7% 0.136 258.1)
- #CB9120
#CB9120
oklch(69.6% 0.136 78.1)
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 #669EF1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.024
- Chefchaouen Blue #4895EF ΔE 0.039
- Periwinkle Blue #8F99FB ΔE 0.052
- Soft Blue #6488EA ΔE 0.058
- Dark Sky Blue #448EE4 ΔE 0.059
- Perrywinkle #8F8CE7 ΔE 0.062
- Lavender Blue #8B88F8 ΔE 0.070
- Dodger Blue #1E90FF ΔE 0.071
Use #669EF1 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.