#618DD0
Closest named color: Faded Blue (#658CBB). oklch(64% 0.112 258.6), rgb(97, 141, 208).
Aa
Black text reads best on this color (6.22:1).
About this color
#618DD0 is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.112 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.032 away. Black text reads best on it, at 6.22:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.22:1 |
| White text | 3.37:1 |
Values
| HEX | #618DD0 |
| RGB | rgb(97, 141, 208) |
| HSL | hsl(216, 54%, 60%) |
| OKLCH | oklch(64% 0.112 258.6) |
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 #618DD0 | 3.37:1 | AA large text | Lc -66.5 | Content text, not long reading |
| Black text on #618DD0 | 6.22:1 | AA | Lc 43.0 | Non-text elements, placeholder text |
| #618DD0 text on white | 3.37:1 | AA large text | Lc 61.0 | Content text, not long reading |
| #618DD0 text on black | 6.22:1 | AA | Lc -40.7 | 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
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CDDAEE
oklch(88.5% 0.031 258.9)
-
Step 300
300
#ABC2E5
oklch(80.9% 0.056 258.7)
-
Step 400
400
#7FA2D8
oklch(70.7% 0.089 258.9)
-
Step 500
500 (this color)
#618DD0
oklch(64% 0.112 258.6)
-
Step 600
600
#4473BA
oklch(55.6% 0.122 258.4)
-
Step 700
700
#3660A0
oklch(49.1% 0.113 258.6)
-
Step 800
800
#2D4F82
oklch(42.8% 0.094 258.3)
-
Step 900
900
#284268
oklch(37.7% 0.073 257.8)
-
Step 950
950
#18273D
oklch(27.1% 0.046 257.8)
#618DD0 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) | #7292D3 | 0.026 |
| Deuteranopia (no green cones) | #6587CF | 0.016 |
| Tritanopia (no blue cones) | #239CA5 | 0.100 |
| Achromatopsia (no color) | #8C8C8C | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618DD0
#618DD0
oklch(64% 0.112 258.6)
- #B18331
#B18331
oklch(64% 0.112 78.5)
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 #618DD0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.032
- Dark Sky Blue #448EE4 ΔE 0.038
- Soft Blue #6488EA ΔE 0.045
- Cornflower Blue #6495ED ΔE 0.045
- Chefchaouen Blue #4895EF ΔE 0.049
- Cool Blue #4984B8 ΔE 0.051
- Dusty Blue #5A86AD ΔE 0.055
- Off Blue #5684AE ΔE 0.056
Use #618DD0 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.