#618FCF
Closest named color: Faded Blue (#658CBB). oklch(64.4% 0.109 256.8), rgb(97, 143, 207).
Aa
Black text reads best on this color (6.33:1).
About this color
#618FCF is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.109 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.030 away. Black text reads best on it, at 6.33:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.33:1 |
| White text | 3.31:1 |
Values
| HEX | #618FCF |
| RGB | rgb(97, 143, 207) |
| HSL | hsl(215, 53%, 60%) |
| OKLCH | oklch(64.4% 0.109 256.8) |
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 #618FCF | 3.31:1 | AA large text | Lc -65.8 | Content text, not long reading |
| Black text on #618FCF | 6.33:1 | AA | Lc 43.7 | Non-text elements, placeholder text |
| #618FCF text on white | 3.31:1 | AA large text | Lc 60.4 | Content text, not long reading |
| #618FCF text on black | 6.33:1 | AA | Lc -41.3 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EAF4
oklch(93.5% 0.015 257.2)
-
Step 200
200
#CDDAED
oklch(88.4% 0.03 257.8)
-
Step 300
300
#ABC3E3
oklch(81% 0.052 255.7)
-
Step 400
400
#7EA3D6
oklch(70.8% 0.086 256.5)
-
Step 500
500 (this color)
#618FCF
oklch(64.4% 0.109 256.8)
-
Step 600
600
#4374B7
oklch(55.6% 0.118 256.7)
-
Step 700
700
#34619E
oklch(49.1% 0.11 256.6)
-
Step 800
800
#2C4F80
oklch(42.6% 0.091 257.1)
-
Step 900
900
#284267
oklch(37.7% 0.071 257.3)
-
Step 950
950
#18273C
oklch(27% 0.044 256.9)
#618FCF 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) | #7593D2 | 0.027 |
| Deuteranopia (no green cones) | #6888CE | 0.019 |
| Tritanopia (no blue cones) | #249DA6 | 0.096 |
| Achromatopsia (no color) | #8D8D8D | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618FCF
#618FCF
oklch(64.4% 0.109 256.8)
- #B38437
#B38437
oklch(64.5% 0.109 76.8)
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 #618FCF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.030
- Dark Sky Blue #448EE4 ΔE 0.041
- Cornflower Blue #6495ED ΔE 0.045
- Soft Blue #6488EA ΔE 0.049
- Chefchaouen Blue #4895EF ΔE 0.050
- Cool Blue #4984B8 ΔE 0.052
- Dusty Blue #5A86AD ΔE 0.054
- Off Blue #5684AE ΔE 0.056
Use #618FCF 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.