#669ECF
Closest named color: Greyblue (#77A1B5). oklch(68% 0.094 246.1), rgb(102, 158, 207).
Aa
Black text reads best on this color (7.35:1).
About this color
#669ECF is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.094 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.045 away. Black text reads best on it, at 7.35:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.35:1 |
| White text | 2.85:1 |
Values
| HEX | #669ECF |
| RGB | rgb(102, 158, 207) |
| HSL | hsl(208, 52%, 61%) |
| OKLCH | oklch(68% 0.094 246.1) |
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 #669ECF | 2.85:1 | Fails | Lc -59.9 | Large or bold text, headings |
| Black text on #669ECF | 7.35:1 | AAA | Lc 49.5 | Large or bold text, headings |
| #669ECF text on white | 2.85:1 | Fails | Lc 54.6 | Large or bold text, headings |
| #669ECF text on black | 7.35:1 | AAA | Lc -47.3 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEE
oklch(88.5% 0.033 245.3)
-
Step 300
300
#A2C5E5
oklch(80.9% 0.059 246.2)
-
Step 400
400 (this color)
#669ECF
oklch(68% 0.094 246.1)
-
Step 500
500
#448FCD
oklch(63% 0.12 246.2)
-
Step 600
600
#1E78BA
oklch(55.5% 0.13 246.2)
-
Step 700
700
#0E65A1
oklch(49.1% 0.122 246.3)
-
Step 800
800
#125382
oklch(42.8% 0.1 245.8)
-
Step 900
900
#184568
oklch(37.8% 0.077 245.6)
-
Step 950
950
#10283D
oklch(26.9% 0.05 247.3)
#669ECF 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) | #8A9FD1 | 0.043 |
| Deuteranopia (no green cones) | #7C94CE | 0.034 |
| Tritanopia (no blue cones) | #30AAAF | 0.079 |
| Achromatopsia (no color) | #999999 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669ECF
#669ECF
oklch(68% 0.094 246.1)
- #C08C57
#C08C57
oklch(67.9% 0.094 65.6)
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 #669ECF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.045
- Faded Blue #658CBB ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.057
- Bluegrey #85A3B2 ΔE 0.059
- Bluey Grey #89A0B0 ΔE 0.061
- Cool Gray #8D99AE ΔE 0.062
- Silver Lake Blue #778DA9 ΔE 0.063
- Chefchaouen Blue #4895EF ΔE 0.065
Use #669ECF 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.