#668EBD
Closest named color: Faded Blue (#658CBB). oklch(63.6% 0.084 253), rgb(102, 142, 189).
Aa
Black text reads best on this color (6.16:1).
About this color
#668EBD is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.084 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.006 away. Black text reads best on it, at 6.16:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.16:1 |
| White text | 3.40:1 |
Values
| HEX | #668EBD |
| RGB | rgb(102, 142, 189) |
| HSL | hsl(212, 40%, 57%) |
| OKLCH | oklch(63.6% 0.084 253) |
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 #668EBD | 3.40:1 | AA large text | Lc -66.9 | Content text, not long reading |
| Black text on #668EBD | 6.16:1 | AA | Lc 42.6 | Non-text elements, placeholder text |
| #668EBD text on white | 3.40:1 | AA large text | Lc 61.5 | Content text, not long reading |
| #668EBD text on black | 6.16:1 | AA | Lc -40.2 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EAF2
oklch(93.5% 0.013 255.5)
-
Step 200
200
#CFDAE8
oklch(88.4% 0.023 254.4)
-
Step 300
300
#AEC3DB
oklch(80.9% 0.041 251.8)
-
Step 400
400
#84A3C9
oklch(70.6% 0.066 253.8)
-
Step 500
500 (this color)
#668EBD
oklch(63.6% 0.084 253)
-
Step 600
600
#4B76A7
oklch(55.6% 0.091 252.6)
-
Step 700
700
#3C6390
oklch(49.1% 0.085 253)
-
Step 800
800
#325175
oklch(42.8% 0.071 253.1)
-
Step 900
900
#2C435E
oklch(37.7% 0.055 253.1)
-
Step 950
950
#1A2737
oklch(26.9% 0.035 254.1)
#668EBD 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) | #7C90BF | 0.029 |
| Deuteranopia (no green cones) | #7187BC | 0.022 |
| Tritanopia (no blue cones) | #42999E | 0.074 |
| Achromatopsia (no color) | #8B8B8B | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668EBD
#668EBD
oklch(63.6% 0.084 253)
- #AA834F
#AA834F
oklch(63.6% 0.084 73.3)
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 #668EBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.006
- Dusty Blue #5A86AD ΔE 0.034
- Silver Lake Blue #778DA9 ΔE 0.035
- Off Blue #5684AE ΔE 0.040
- Blue Grey #758DA3 ΔE 0.042
- Cool Blue #4984B8 ΔE 0.045
- Steel Blue #4682B4 ΔE 0.052
- Light Slate Gray #778899 ΔE 0.054
Use #668EBD 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.