#618ADB
Closest named color: Soft Blue (#6488EA). oklch(64% 0.13 262.9), rgb(97, 138, 219).
Aa
Black text reads best on this color (6.16:1).
About this color
#618ADB is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.130 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.025 away. Black text reads best on it, at 6.16:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.16:1 |
| White text | 3.40:1 |
Values
| HEX | #618ADB |
| RGB | rgb(97, 138, 219) |
| HSL | hsl(220, 63%, 62%) |
| OKLCH | oklch(64% 0.13 262.9) |
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 #618ADB | 3.40:1 | AA large text | Lc -66.8 | Content text, not long reading |
| Black text on #618ADB | 6.16:1 | AA | Lc 42.7 | Non-text elements, placeholder text |
| #618ADB text on white | 3.40:1 | AA large text | Lc 61.4 | Content text, not long reading |
| #618ADB text on black | 6.16:1 | AA | Lc -40.3 | 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
#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
#ABC1EB
oklch(80.9% 0.064 263.3)
-
Step 400
400
#7FA0E1
oklch(70.7% 0.103 263.3)
-
Step 500
500 (this color)
#618ADB
oklch(64% 0.13 262.9)
-
Step 600
600
#456FC5
oklch(55.5% 0.142 263)
-
Step 700
700
#375DAB
oklch(49.2% 0.132 262.9)
-
Step 800
800
#2E4C8A
oklch(42.7% 0.109 263.1)
-
Step 900
900
#29406E
oklch(37.7% 0.084 262.9)
-
Step 950
950
#182641
oklch(27.1% 0.054 262.5)
#618ADB 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) | #6991DE | 0.022 |
| Deuteranopia (no green cones) | #5A86D9 | 0.014 |
| Tritanopia (no blue cones) | #0D9CA8 | 0.117 |
| Achromatopsia (no color) | #8B8B8B | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618ADB
#618ADB
oklch(64% 0.13 262.9)
- #B28305
#B28305
oklch(63.9% 0.13 82.9)
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 #618ADB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.025
- Dark Sky Blue #448EE4 ΔE 0.029
- Cornflower Blue #6495ED ΔE 0.037
- Chefchaouen Blue #4895EF ΔE 0.040
- Faded Blue #658CBB ΔE 0.051
- Cool Blue #4984B8 ΔE 0.062
- Perrywinkle #8F8CE7 ΔE 0.063
- Water Blue #0E87CC ΔE 0.064
Use #618ADB 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.