#669CCA
Closest named color: Greyblue (#77A1B5). oklch(67.3% 0.089 245.4), rgb(102, 156, 202).
Aa
Black text reads best on this color (7.17:1).
About this color
#669CCA is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.089 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.042 away. Black text reads best on it, at 7.17:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.17:1 |
| White text | 2.92:1 |
Values
| HEX | #669CCA |
| RGB | rgb(102, 156, 202) |
| HSL | hsl(208, 49%, 60%) |
| OKLCH | oklch(67.3% 0.089 245.4) |
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 #669CCA | 2.92:1 | Fails | Lc -60.9 | Content text, not long reading |
| Black text on #669CCA | 7.17:1 | AAA | Lc 48.5 | Large or bold text, headings |
| #669CCA text on white | 2.92:1 | Fails | Lc 55.6 | Large or bold text, headings |
| #669CCA text on black | 7.17:1 | AAA | Lc -46.2 | 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
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A3C5E3
oklch(80.9% 0.056 245.2)
-
Step 400
400 (this color)
#669CCA
oklch(67.3% 0.089 245.4)
-
Step 500
500
#4790CA
oklch(63.2% 0.114 245)
-
Step 600
600
#2479B7
oklch(55.7% 0.124 245.3)
-
Step 700
700
#15659D
oklch(49% 0.115 245.5)
-
Step 800
800
#165380
oklch(42.8% 0.096 245.6)
-
Step 900
900
#1A4566
oklch(37.7% 0.074 244.9)
-
Step 950
950
#11283C
oklch(26.9% 0.047 246.9)
#669CCA 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) | #899DCC | 0.042 |
| Deuteranopia (no green cones) | #7C92C9 | 0.035 |
| Tritanopia (no blue cones) | #35A7AC | 0.074 |
| Achromatopsia (no color) | #979797 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669CCA
#669CCA
oklch(67.3% 0.089 245.4)
- #BC8B59
#BC8B59
oklch(67.3% 0.089 65.9)
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 #669CCA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.042
- Faded Blue #658CBB ΔE 0.045
- Silver Lake Blue #778DA9 ΔE 0.056
- Bluegrey #85A3B2 ΔE 0.058
- Cool Gray #8D99AE ΔE 0.058
- Bluey Grey #89A0B0 ΔE 0.058
- Cornflower Blue #6495ED ΔE 0.061
- Blue Grey #758DA3 ΔE 0.062
Use #669CCA 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.