#6597CE
Closest named color: Faded Blue (#658CBB). oklch(66.4% 0.098 251.7), rgb(101, 151, 206).
Aa
Black text reads best on this color (6.87:1).
About this color
#6597CE is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.098 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.037 away. Black text reads best on it, at 6.87:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.87:1 |
| White text | 3.05:1 |
Values
| HEX | #6597CE |
| RGB | rgb(101, 151, 206) |
| HSL | hsl(211, 52%, 60%) |
| OKLCH | oklch(66.4% 0.098 251.7) |
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 #6597CE | 3.05:1 | AA large text | Lc -62.7 | Content text, not long reading |
| Black text on #6597CE | 6.87:1 | AA | Lc 46.8 | Large or bold text, headings |
| #6597CE text on white | 3.05:1 | AA large text | Lc 57.3 | Large or bold text, headings |
| #6597CE text on black | 6.87:1 | AA | Lc -44.5 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CDDBEB
oklch(88.6% 0.027 251.7)
-
Step 300
300
#ABC3DF
oklch(80.8% 0.048 252.4)
-
Step 400
400
#7DA4D0
oklch(70.7% 0.078 251.9)
-
Step 500
500 (this color)
#6597CE
oklch(66.4% 0.098 251.7)
-
Step 600
600
#4076B0
oklch(55.5% 0.108 251.8)
-
Step 700
700
#326397
oklch(49.1% 0.099 251.7)
-
Step 800
800
#2A517B
oklch(42.7% 0.083 251.9)
-
Step 900
900
#274363
oklch(37.6% 0.065 252.8)
-
Step 950
950
#17283A
oklch(27.1% 0.041 250.8)
#6597CE 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) | #8199D0 | 0.034 |
| Deuteranopia (no green cones) | #748FCD | 0.026 |
| Tritanopia (no blue cones) | #30A4AA | 0.086 |
| Achromatopsia (no color) | #939393 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6597CE
#6597CE
oklch(66.4% 0.098 251.7)
- #B9894B
#B9894B
oklch(66.4% 0.099 71.7)
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 #6597CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.037
- Cornflower Blue #6495ED ΔE 0.049
- Dark Sky Blue #448EE4 ΔE 0.056
- Chefchaouen Blue #4895EF ΔE 0.056
- Silver Lake Blue #778DA9 ΔE 0.056
- Greyblue #77A1B5 ΔE 0.057
- Blue Grey #758DA3 ΔE 0.064
- Dusty Blue #5A86AD ΔE 0.064
Use #6597CE 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.