#669BC1
Closest named color: Greyblue (#77A1B5). oklch(66.7% 0.08 240.7), rgb(102, 155, 193).
Aa
Black text reads best on this color (7.02:1).
About this color
#669BC1 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.080 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.034 away. Black text reads best on it, at 7.02:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.02:1 |
| White text | 2.98:1 |
Values
| HEX | #669BC1 |
| RGB | rgb(102, 155, 193) |
| HSL | hsl(205, 42%, 58%) |
| OKLCH | oklch(66.7% 0.08 240.7) |
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 #669BC1 | 2.98:1 | Fails | Lc -61.8 | Content text, not long reading |
| Black text on #669BC1 | 7.02:1 | AAA | Lc 47.6 | Large or bold text, headings |
| #669BC1 text on white | 2.98:1 | Fails | Lc 56.4 | Large or bold text, headings |
| #669BC1 text on black | 7.02:1 | AAA | Lc -45.3 | 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 500.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDBE6
oklch(88.4% 0.021 241.4)
-
Step 300
300
#ABC5D8
oklch(81% 0.039 239.7)
-
Step 400
400
#7DA6C4
oklch(70.6% 0.063 240.5)
-
Step 500
500 (this color)
#669BC1
oklch(66.7% 0.08 240.7)
-
Step 600
600
#407AA1
oklch(55.7% 0.086 240.2)
-
Step 700
700
#31668A
oklch(49% 0.081 240.8)
-
Step 800
800
#2A5370
oklch(42.6% 0.067 241.5)
-
Step 900
900
#26455B
oklch(37.7% 0.053 241)
-
Step 950
950
#172935
oklch(27.1% 0.033 238.8)
#669BC1 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) | #8A9BC3 | 0.043 |
| Deuteranopia (no green cones) | #7E91C0 | 0.037 |
| Tritanopia (no blue cones) | #3DA4A8 | 0.063 |
| Achromatopsia (no color) | #959595 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669BC1
#669BC1
oklch(66.7% 0.08 240.7)
- #B98961
#B98961
oklch(66.7% 0.08 60.6)
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 #669BC1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.034
- Faded Blue #658CBB ΔE 0.041
- Silver Lake Blue #778DA9 ΔE 0.046
- Blue Grey #758DA3 ΔE 0.051
- Cool Gray #8D99AE ΔE 0.051
- Bluegrey #85A3B2 ΔE 0.052
- Bluey Grey #89A0B0 ΔE 0.052
- Cadet Blue #5F9EA0 ΔE 0.055
Use #669BC1 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.