#669DC7
Closest named color: Greyblue (#77A1B5). oklch(67.4% 0.085 242.5), rgb(102, 157, 199).
Aa
Black text reads best on this color (7.21:1).
About this color
#669DC7 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.085 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.037 away. Black text reads best on it, at 7.21:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.21:1 |
| White text | 2.91:1 |
Values
| HEX | #669DC7 |
| RGB | rgb(102, 157, 199) |
| HSL | hsl(206, 46%, 59%) |
| OKLCH | oklch(67.4% 0.085 242.5) |
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 #669DC7 | 2.91:1 | Fails | Lc -60.7 | Content text, not long reading |
| Black text on #669DC7 | 7.21:1 | AAA | Lc 48.7 | Large or bold text, headings |
| #669DC7 text on white | 2.91:1 | Fails | Lc 55.4 | Large or bold text, headings |
| #669DC7 text on black | 7.21:1 | AAA | Lc -46.4 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C9DCEC
oklch(88.5% 0.03 243.4)
-
Step 300
300
#A3C5E1
oklch(80.8% 0.054 243.3)
-
Step 400
400 (this color)
#669DC7
oklch(67.4% 0.085 242.5)
-
Step 500
500
#4791C6
oklch(63.2% 0.109 242.4)
-
Step 600
600
#227AB2
oklch(55.6% 0.118 242.1)
-
Step 700
700
#13669A
oklch(49% 0.111 243.1)
-
Step 800
800
#14547C
oklch(42.7% 0.091 241.8)
-
Step 900
900
#194564
oklch(37.6% 0.072 242.8)
-
Step 950
950
#10293B
oklch(27.1% 0.046 242.4)
#669DC7 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) | #8B9DC9 | 0.044 |
| Deuteranopia (no green cones) | #7E93C6 | 0.036 |
| Tritanopia (no blue cones) | #37A7AB | 0.070 |
| Achromatopsia (no color) | #979797 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669DC7
#669DC7
oklch(67.4% 0.085 242.5)
- #BC8B5E
#BC8B5E
oklch(67.4% 0.085 63.1)
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 #669DC7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.037
- Faded Blue #658CBB ΔE 0.047
- Bluegrey #85A3B2 ΔE 0.053
- Bluey Grey #89A0B0 ΔE 0.054
- Silver Lake Blue #778DA9 ΔE 0.054
- Cool Gray #8D99AE ΔE 0.055
- Blue Grey #758DA3 ΔE 0.060
- Cadet Blue #5F9EA0 ΔE 0.062
Use #669DC7 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.