#668EBE
Closest named color: Faded Blue (#658CBB). oklch(63.7% 0.085 253.5), rgb(102, 142, 190).
Aa
Black text reads best on this color (6.17:1).
About this color
#668EBE is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.085 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.007 away. Black text reads best on it, at 6.17:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.17:1 |
| White text | 3.39:1 |
Values
| HEX | #668EBE |
| RGB | rgb(102, 142, 190) |
| HSL | hsl(213, 40%, 57%) |
| OKLCH | oklch(63.7% 0.085 253.5) |
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 #668EBE | 3.39:1 | AA large text | Lc -66.9 | Content text, not long reading |
| Black text on #668EBE | 6.17:1 | AA | Lc 42.7 | Non-text elements, placeholder text |
| #668EBE text on white | 3.39:1 | AA large text | Lc 61.4 | Content text, not long reading |
| #668EBE text on black | 6.17:1 | AA | Lc -40.3 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EAF2
oklch(93.5% 0.013 255.5)
-
Step 200
200
#CFDAE9
oklch(88.5% 0.024 256.1)
-
Step 300
300
#AEC3DC
oklch(80.9% 0.042 252.9)
-
Step 400
400
#84A3CA
oklch(70.6% 0.067 254.4)
-
Step 500
500 (this color)
#668EBE
oklch(63.7% 0.085 253.5)
-
Step 600
600
#4B76A8
oklch(55.6% 0.092 253.1)
-
Step 700
700
#3C6390
oklch(49.1% 0.085 253)
-
Step 800
800
#325175
oklch(42.8% 0.071 253.1)
-
Step 900
900
#2C435F
oklch(37.7% 0.056 253.9)
-
Step 950
950
#1A2737
oklch(26.9% 0.035 254.1)
#668EBE 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) | #7B90C0 | 0.027 |
| Deuteranopia (no green cones) | #7187BD | 0.022 |
| Tritanopia (no blue cones) | #42999E | 0.075 |
| Achromatopsia (no color) | #8B8B8B | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668EBE
#668EBE
oklch(63.7% 0.085 253.5)
- #AA834E
#AA834E
oklch(63.6% 0.085 73.8)
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 #668EBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.007
- Dusty Blue #5A86AD ΔE 0.035
- Silver Lake Blue #778DA9 ΔE 0.036
- Off Blue #5684AE ΔE 0.040
- Blue Grey #758DA3 ΔE 0.043
- Cool Blue #4984B8 ΔE 0.045
- Steel Blue #4682B4 ΔE 0.052
- Light Slate Gray #778899 ΔE 0.056
Use #668EBE 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.