#6691C1
Closest named color: Faded Blue (#658CBB). oklch(64.5% 0.087 251.9), rgb(102, 145, 193).
Aa
Black text reads best on this color (6.38:1).
About this color
#6691C1 is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.087 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.015 away. Black text reads best on it, at 6.38:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.38:1 |
| White text | 3.28:1 |
Values
| HEX | #6691C1 |
| RGB | rgb(102, 145, 193) |
| HSL | hsl(212, 42%, 58%) |
| OKLCH | oklch(64.5% 0.087 251.9) |
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 #6691C1 | 3.28:1 | AA large text | Lc -65.6 | Content text, not long reading |
| Black text on #6691C1 | 6.38:1 | AA | Lc 43.9 | Non-text elements, placeholder text |
| #6691C1 text on white | 3.28:1 | AA large text | Lc 60.2 | Content text, not long reading |
| #6691C1 text on black | 6.38:1 | AA | Lc -41.6 | 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
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE9
oklch(88.6% 0.024 250.1)
-
Step 300
300
#ADC3DC
oklch(80.9% 0.043 251.7)
-
Step 400
400
#82A4CA
oklch(70.7% 0.067 251.6)
-
Step 500
500 (this color)
#6691C1
oklch(64.5% 0.087 251.9)
-
Step 600
600
#4876A9
oklch(55.5% 0.095 252.1)
-
Step 700
700
#396391
oklch(49% 0.088 252)
-
Step 800
800
#305175
oklch(42.7% 0.072 251.8)
-
Step 900
900
#2B435F
oklch(37.6% 0.057 253)
-
Step 950
950
#192837
oklch(27.1% 0.035 249.2)
#6691C1 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) | #7E93C3 | 0.031 |
| Deuteranopia (no green cones) | #738AC0 | 0.023 |
| Tritanopia (no blue cones) | #3F9CA1 | 0.076 |
| Achromatopsia (no color) | #8E8E8E | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6691C1
#6691C1
oklch(64.5% 0.087 251.9)
- #AE8550
#AE8550
oklch(64.5% 0.086 72.4)
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 #6691C1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.015
- Silver Lake Blue #778DA9 ΔE 0.038
- Dusty Blue #5A86AD ΔE 0.043
- Blue Grey #758DA3 ΔE 0.045
- Off Blue #5684AE ΔE 0.048
- Cool Blue #4984B8 ΔE 0.051
- Greyblue #77A1B5 ΔE 0.059
- Steel Blue #4682B4 ΔE 0.059
Use #6691C1 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.