#669AB2
Closest named color: Greyblue (#77A1B5). oklch(65.9% 0.066 228.7), rgb(102, 154, 178).
Aa
Black text reads best on this color (6.83:1).
About this color
#669AB2 is a medium-light, muted teal or cyan. In OKLCH its lightness is 66%, its chroma 0.066 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.029 away. Black text reads best on it, at 6.83:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 6.83:1 |
| White text | 3.07:1 |
Values
| HEX | #669AB2 |
| RGB | rgb(102, 154, 178) |
| HSL | hsl(199, 33%, 55%) |
| OKLCH | oklch(65.9% 0.066 228.7) |
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 #669AB2 | 3.07:1 | AA large text | Lc -63.0 | Content text, not long reading |
| Black text on #669AB2 | 6.83:1 | AA | Lc 46.5 | Large or bold text, headings |
| #669AB2 text on white | 3.07:1 | AA large text | Lc 57.6 | Large or bold text, headings |
| #669AB2 text on black | 6.83:1 | AA | Lc -44.2 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE3
oklch(88.6% 0.018 229)
-
Step 300
300
#ACC5D1
oklch(80.9% 0.032 228.3)
-
Step 400
400
#7FA7BA
oklch(70.6% 0.052 228.7)
-
Step 500
500 (this color)
#669AB2
oklch(65.9% 0.066 228.7)
-
Step 600
600
#427B95
oklch(55.5% 0.072 229.6)
-
Step 700
700
#34687F
oklch(49.1% 0.067 229.1)
-
Step 800
800
#2C5567
oklch(42.8% 0.055 228.5)
-
Step 900
900
#284654
oklch(37.7% 0.043 229.5)
-
Step 950
950
#182931
oklch(27% 0.027 229.2)
#669AB2 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) | #8E98B3 | 0.049 |
| Deuteranopia (no green cones) | #838FB2 | 0.044 |
| Tritanopia (no blue cones) | #47A1A2 | 0.046 |
| Achromatopsia (no color) | #939393 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669AB2
#669AB2
oklch(65.9% 0.066 228.7)
- #B4866E
#B4866E
oklch(65.9% 0.066 48.7)
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 #669AB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.029
- Cadet Blue #5F9EA0 ΔE 0.034
- Silver Lake Blue #778DA9 ΔE 0.038
- Blue Grey #758DA3 ΔE 0.038
- Faded Blue #658CBB ΔE 0.046
- Cool Gray #8D99AE ΔE 0.047
- Bluegrey #85A3B2 ΔE 0.047
- Bluey Grey #89A0B0 ΔE 0.047
Use #669AB2 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.