#669FB0
Closest named color: Greyblue (#77A1B5). oklch(66.9% 0.065 218.7), rgb(102, 159, 176).
Aa
Black text reads best on this color (7.15:1).
About this color
#669FB0 is a medium-light, muted teal or cyan. In OKLCH its lightness is 67%, its chroma 0.065 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.022 away. Black text reads best on it, at 7.15:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.15:1 |
| White text | 2.93:1 |
Values
| HEX | #669FB0 |
| RGB | rgb(102, 159, 176) |
| HSL | hsl(194, 32%, 55%) |
| OKLCH | oklch(66.9% 0.065 218.7) |
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 #669FB0 | 2.93:1 | Fails | Lc -61.1 | Content text, not long reading |
| Black text on #669FB0 | 7.15:1 | AAA | Lc 48.3 | Large or bold text, headings |
| #669FB0 text on white | 2.93:1 | Fails | Lc 55.7 | Large or bold text, headings |
| #669FB0 text on black | 7.15:1 | AAA | Lc -46.1 | 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
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CADDE3
oklch(88.5% 0.022 218.6)
-
Step 300
300
#A4C7D2
oklch(80.8% 0.04 218.8)
-
Step 400
400 (this color)
#669FB0
oklch(66.9% 0.065 218.7)
-
Step 500
500
#4895AB
oklch(63% 0.082 219.1)
-
Step 600
600
#237F97
oklch(55.5% 0.09 219.6)
-
Step 700
700
#136C81
oklch(49.2% 0.084 218.7)
-
Step 800
800
#155868
oklch(42.8% 0.069 217.8)
-
Step 900
900
#1A4855
oklch(37.6% 0.054 219.6)
-
Step 950
950
#112A32
oklch(26.9% 0.034 221.3)
#669FB0 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) | #949CB1 | 0.056 |
| Deuteranopia (no green cones) | #8993B0 | 0.051 |
| Tritanopia (no blue cones) | #47A5A4 | 0.040 |
| Achromatopsia (no color) | #979797 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669FB0
#669FB0
oklch(66.9% 0.065 218.7)
- #B98878
#B98878
oklch(67% 0.065 38.8)
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 #669FB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.022
- Cadet Blue #5F9EA0 ΔE 0.026
- 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 0.051
Use #669FB0 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.