#6397BC
Closest named color: Faded Blue (#658CBB). oklch(65.4% 0.078 240.5), rgb(99, 151, 188).
Aa
Black text reads best on this color (6.68:1).
About this color
#6397BC is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.078 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.031 away. Black text reads best on it, at 6.68:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.68:1 |
| White text | 3.14:1 |
Values
| HEX | #6397BC |
| RGB | rgb(99, 151, 188) |
| HSL | hsl(205, 40%, 56%) |
| OKLCH | oklch(65.4% 0.078 240.5) |
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 #6397BC | 3.14:1 | AA large text | Lc -63.8 | Content text, not long reading |
| Black text on #6397BC | 6.68:1 | AA | Lc 45.7 | Large or bold text, headings |
| #6397BC text on white | 3.14:1 | AA large text | Lc 58.4 | Large or bold text, headings |
| #6397BC text on black | 6.68:1 | AA | Lc -43.3 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CDDBE6
oklch(88.4% 0.021 241.4)
-
Step 300
300
#ABC4D7
oklch(80.8% 0.038 240.8)
-
Step 400
400
#7EA6C4
oklch(70.7% 0.062 241.1)
-
Step 500
500 (this color)
#6397BC
oklch(65.4% 0.078 240.5)
-
Step 600
600
#417AA0
oklch(55.7% 0.084 239.8)
-
Step 700
700
#326689
oklch(49% 0.079 240.5)
-
Step 800
800
#2A536F
oklch(42.5% 0.066 240.5)
-
Step 900
900
#27455A
oklch(37.7% 0.051 240.5)
-
Step 950
950
#172935
oklch(27.1% 0.033 238.8)
#6397BC 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) | #8797BE | 0.044 |
| Deuteranopia (no green cones) | #7B8DBB | 0.037 |
| Tritanopia (no blue cones) | #3AA0A3 | 0.064 |
| Achromatopsia (no color) | #919191 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6397BC
#6397BC
oklch(65.4% 0.078 240.5)
- #B4855F
#B4855F
oklch(65.4% 0.078 59.8)
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 #6397BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.031
- Silver Lake Blue #778DA9 ΔE 0.038
- Greyblue #77A1B5 ΔE 0.042
- Blue Grey #758DA3 ΔE 0.042
- Dusty Blue #5A86AD ΔE 0.051
- Cadet Blue #5F9EA0 ΔE 0.053
- Cool Gray #8D99AE ΔE 0.055
- Off Blue #5684AE ΔE 0.058
Use #6397BC 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.