#669FB3
Closest named color: Greyblue (#77A1B5). oklch(67.1% 0.067 222.2), rgb(102, 159, 179).
Aa
Black text reads best on this color (7.17:1).
About this color
#669FB3 is a medium-light, muted teal or cyan. In OKLCH its lightness is 67%, its chroma 0.067 and its hue 222°. 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 7.17:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.17:1 |
| White text | 2.92:1 |
Values
| HEX | #669FB3 |
| RGB | rgb(102, 159, 179) |
| HSL | hsl(196, 34%, 55%) |
| OKLCH | oklch(67.1% 0.067 222.2) |
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 #669FB3 | 2.92:1 | Fails | Lc -60.9 | Content text, not long reading |
| Black text on #669FB3 | 7.17:1 | AAA | Lc 48.4 | Large or bold text, headings |
| #669FB3 text on white | 2.92:1 | Fails | Lc 55.6 | Large or bold text, headings |
| #669FB3 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADDE4
oklch(88.5% 0.023 221.8)
-
Step 300
300
#A4C7D4
oklch(80.8% 0.042 222.4)
-
Step 400
400 (this color)
#669FB3
oklch(67.1% 0.067 222.2)
-
Step 500
500
#4795AE
oklch(63.1% 0.085 221.7)
-
Step 600
600
#227F9A
oklch(55.6% 0.092 222.1)
-
Step 700
700
#126B84
oklch(49.1% 0.086 222.7)
-
Step 800
800
#14576B
oklch(42.6% 0.071 222.8)
-
Step 900
900
#1A4857
oklch(37.7% 0.056 222.8)
-
Step 950
950
#112A33
oklch(26.9% 0.035 224)
#669FB3 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) | #939CB4 | 0.054 |
| Deuteranopia (no green cones) | #8893B3 | 0.050 |
| Tritanopia (no blue cones) | #45A6A5 | 0.044 |
| Achromatopsia (no color) | #979797 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669FB3
#669FB3
oklch(67.1% 0.067 222.2)
- #B98875
#B98875
oklch(67% 0.067 42.1)
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 #669FB3, 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 0.030
- Bluegrey #85A3B2 ΔE 0.039
- Bluey Grey #89A0B0 ΔE 0.041
- Cool Gray #8D99AE ΔE 0.047
- Blue Grey #758DA3 ΔE 0.050
- Silver Lake Blue #778DA9 ΔE 0.050
- Dull Teal #5F9E8F ΔE 0.055
Use #669FB3 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.