#669FD0
Closest named color: Greyblue (#77A1B5). oklch(68.3% 0.094 245.7), rgb(102, 159, 208).
Aa
Black text reads best on this color (7.43:1).
About this color
#669FD0 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 7.43:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.43:1 |
| White text | 2.82:1 |
Values
| HEX | #669FD0 |
| RGB | rgb(102, 159, 208) |
| HSL | hsl(208, 53%, 61%) |
| OKLCH | oklch(68.3% 0.094 245.7) |
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 #669FD0 | 2.82:1 | Fails | Lc -59.4 | Large or bold text, headings |
| Black text on #669FD0 | 7.43:1 | AAA | Lc 49.9 | Large or bold text, headings |
| #669FD0 text on white | 2.82:1 | Fails | Lc 54.1 | Large or bold text, headings |
| #669FD0 text on black | 7.43:1 | AAA | Lc -47.7 | 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)
#669FD0
oklch(68.3% 0.094 245.7)
-
Step 500
500
#4390CE
oklch(63.2% 0.121 245.7)
-
Step 600
600
#1C79BA
oklch(55.7% 0.13 245.3)
-
Step 700
700
#0965A1
oklch(49.1% 0.122 245.8)
-
Step 800
800
#0F5382
oklch(42.7% 0.1 245.3)
-
Step 900
900
#174568
oklch(37.7% 0.078 245.2)
-
Step 950
950
#0F283D
oklch(26.8% 0.05 246.5)
#669FD0 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) | #8AA0D2 | 0.042 |
| Deuteranopia (no green cones) | #7D95CF | 0.035 |
| Tritanopia (no blue cones) | #2EABB0 | 0.079 |
| Achromatopsia (no color) | #9A9A9A | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669FD0
#669FD0
oklch(68.3% 0.094 245.7)
- #C18D58
#C18D58
oklch(68.3% 0.094 65.7)
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 #669FD0, 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 0.055
- Cornflower Blue #6495ED ΔE 0.057
- Bluegrey #85A3B2 ΔE 0.059
- Bluey Grey #89A0B0 ΔE 0.061
- Cool Gray #8D99AE ΔE 0.062
- Chefchaouen Blue #4895EF ΔE 0.066
- Silver Lake Blue #778DA9 ΔE 0.066
Use #669FD0 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.