#669BD4
Closest named color: Cornflower Blue (#6495ED). oklch(67.6% 0.102 251.2), rgb(102, 155, 212).
Aa
Black text reads best on this color (7.20:1).
About this color
#669BD4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.102 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.045 away. Black text reads best on it, at 7.20:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.20:1 |
| White text | 2.91:1 |
Values
| HEX | #669BD4 |
| RGB | rgb(102, 155, 212) |
| HSL | hsl(211, 56%, 62%) |
| OKLCH | oklch(67.6% 0.102 251.2) |
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 #669BD4 | 2.91:1 | Fails | Lc -60.7 | Content text, not long reading |
| Black text on #669BD4 | 7.20:1 | AAA | Lc 48.6 | Large or bold text, headings |
| #669BD4 text on white | 2.91:1 | Fails | Lc 55.4 | Large or bold text, headings |
| #669BD4 text on black | 7.20:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF0
oklch(88.4% 0.035 252.3)
-
Step 300
300
#A3C4E9
oklch(80.9% 0.064 251.5)
-
Step 400
400 (this color)
#669BD4
oklch(67.6% 0.102 251.2)
-
Step 500
500
#478DD5
oklch(63.1% 0.13 251.2)
-
Step 600
600
#2476C3
oklch(55.7% 0.142 251.1)
-
Step 700
700
#1662A8
oklch(49% 0.132 251.5)
-
Step 800
800
#165188
oklch(42.8% 0.109 250.9)
-
Step 900
900
#1A436D
oklch(37.6% 0.085 251.6)
-
Step 950
950
#102840
oklch(27.1% 0.054 250.5)
#669BD4 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) | #849DD7 | 0.036 |
| Deuteranopia (no green cones) | #7692D3 | 0.028 |
| Tritanopia (no blue cones) | #2BA8AF | 0.088 |
| Achromatopsia (no color) | #979797 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669BD4
#669BD4
oklch(67.6% 0.102 251.2)
- #BE8C4C
#BE8C4C
oklch(67.6% 0.102 71.4)
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 #669BD4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.045
- Faded Blue #658CBB ΔE 0.049
- Chefchaouen Blue #4895EF ΔE 0.054
- Greyblue #77A1B5 ΔE 0.057
- Dark Sky Blue #448EE4 ΔE 0.059
- Silver Lake Blue #778DA9 ΔE 0.066
- Soft Blue #6488EA ΔE 0.068
- Cool Gray #8D99AE ΔE 0.069
Use #669BD4 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.