#669FB8
Closest named color: Greyblue (#77A1B5). oklch(67.3% 0.07 227.6), rgb(102, 159, 184).
Aa
Black text reads best on this color (7.21:1).
About this color
#669FB8 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.070 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.021 away. Black text reads best on it, at 7.21:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.21:1 |
| White text | 2.91:1 |
Values
| HEX | #669FB8 |
| RGB | rgb(102, 159, 184) |
| HSL | hsl(198, 37%, 56%) |
| OKLCH | oklch(67.3% 0.07 227.6) |
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 #669FB8 | 2.91:1 | Fails | Lc -60.7 | Content text, not long reading |
| Black text on #669FB8 | 7.21:1 | AAA | Lc 48.7 | Large or bold text, headings |
| #669FB8 text on white | 2.91:1 | Fails | Lc 55.4 | Large or bold text, headings |
| #669FB8 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#C9DDE6
oklch(88.5% 0.025 226.5)
-
Step 300
300
#A4C7D7
oklch(80.9% 0.044 227.3)
-
Step 400
400 (this color)
#669FB8
oklch(67.3% 0.07 227.6)
-
Step 500
500
#4794B4
oklch(63.1% 0.09 227.9)
-
Step 600
600
#217EA0
oklch(55.6% 0.098 227.8)
-
Step 700
700
#106A89
oklch(49.1% 0.091 228)
-
Step 800
800
#13576F
oklch(42.8% 0.075 227)
-
Step 900
900
#19485A
oklch(37.8% 0.059 226.9)
-
Step 950
950
#102A35
oklch(27% 0.038 228.2)
#669FB8 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) | #929DB9 | 0.053 |
| Deuteranopia (no green cones) | #8693B8 | 0.048 |
| Tritanopia (no blue cones) | #42A6A7 | 0.049 |
| Achromatopsia (no color) | #979797 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669FB8
#669FB8
oklch(67.3% 0.07 227.6)
- #BB8971
#BB8971
oklch(67.3% 0.071 46.7)
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 #669FB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.021
- Cadet Blue #5F9EA0 ΔE 0.038
- Bluegrey #85A3B2 ΔE 0.040
- Bluey Grey #89A0B0 ΔE 0.042
- Cool Gray #8D99AE ΔE 0.047
- Silver Lake Blue #778DA9 ΔE 0.050
- Blue Grey #758DA3 ΔE 0.051
- Faded Blue #658CBB ΔE 0.056
Use #669FB8 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.