#618CDD
Closest named color: Soft Blue (#6488EA). oklch(64.5% 0.131 262.1), rgb(97, 140, 221).
Aa
Black text reads best on this color (6.30:1).
About this color
#618CDD is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.131 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.024 away. Black text reads best on it, at 6.30:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.30:1 |
| White text | 3.33:1 |
Values
| HEX | #618CDD |
| RGB | rgb(97, 140, 221) |
| HSL | hsl(219, 65%, 62%) |
| OKLCH | oklch(64.5% 0.131 262.1) |
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 #618CDD | 3.33:1 | AA large text | Lc -66.0 | Content text, not long reading |
| Black text on #618CDD | 6.30:1 | AA | Lc 43.5 | Non-text elements, placeholder text |
| #618CDD text on white | 3.33:1 | AA large text | Lc 60.6 | Content text, not long reading |
| #618CDD text on black | 6.30:1 | AA | Lc -41.1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDDAF1
oklch(88.6% 0.035 262)
-
Step 300
300
#AAC1EB
oklch(80.8% 0.065 262.4)
-
Step 400
400
#7EA0E1
oklch(70.6% 0.103 262.8)
-
Step 500
500 (this color)
#618CDD
oklch(64.5% 0.131 262.1)
-
Step 600
600
#4370C6
oklch(55.6% 0.143 262)
-
Step 700
700
#355DAB
oklch(49.1% 0.133 262.2)
-
Step 800
800
#2C4C8A
oklch(42.6% 0.11 262.2)
-
Step 900
900
#28406F
oklch(37.7% 0.086 262.6)
-
Step 950
950
#182641
oklch(27.1% 0.054 262.5)
#618CDD 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) | #6B93E0 | 0.023 |
| Deuteranopia (no green cones) | #5B87DB | 0.016 |
| Tritanopia (no blue cones) | #029EAA | 0.118 |
| Achromatopsia (no color) | #8D8D8D | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618CDD
#618CDD
oklch(64.5% 0.131 262.1)
- #B58409
#B58409
oklch(64.5% 0.131 81.8)
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 #618CDD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.024
- Dark Sky Blue #448EE4 ΔE 0.027
- Cornflower Blue #6495ED ΔE 0.031
- Chefchaouen Blue #4895EF ΔE 0.036
- Faded Blue #658CBB ΔE 0.052
- Perrywinkle #8F8CE7 ΔE 0.061
- Dodger Blue #1E90FF ΔE 0.064
- Cool Blue #4984B8 ΔE 0.065
Use #618CDD 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.