#618EF1
Closest named color: Soft Blue (#6488EA). oklch(66.1% 0.156 264.2), rgb(97, 142, 241).
Aa
Black text reads best on this color (6.64:1).
About this color
#618EF1 is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.156 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.017 away. Black text reads best on it, at 6.64:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.64:1 |
| White text | 3.15:1 |
Values
| HEX | #618EF1 |
| RGB | rgb(97, 142, 241) |
| HSL | hsl(221, 84%, 66%) |
| OKLCH | oklch(66.1% 0.156 264.2) |
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 #618EF1 | 3.15:1 | AA large text | Lc -63.9 | Content text, not long reading |
| Black text on #618EF1 | 6.64:1 | AA | Lc 45.6 | Large or bold text, headings |
| #618EF1 text on white | 3.15:1 | AA large text | Lc 58.5 | Large or bold text, headings |
| #618EF1 text on black | 6.64:1 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CBDAF6
oklch(88.6% 0.042 263)
-
Step 300
300
#A8C1F3
oklch(81% 0.076 264)
-
Step 400
400
#7A9FED
oklch(70.8% 0.122 264.2)
-
Step 500
500 (this color)
#618EF1
oklch(66.1% 0.156 264.2)
-
Step 600
600
#3F6CD5
oklch(55.6% 0.169 264.2)
-
Step 700
700
#3159B9
oklch(49% 0.159 264.3)
-
Step 800
800
#294A95
oklch(42.8% 0.129 263.9)
-
Step 900
900
#253E77
oklch(37.6% 0.102 264.3)
-
Step 950
950
#162546
oklch(27.1% 0.065 264.1)
#618EF1 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) | #6298F5 | 0.026 |
| Deuteranopia (no green cones) | #4E8BEF | 0.022 |
| Tritanopia (no blue cones) | #00A4B4 | 0.134 |
| Achromatopsia (no color) | #919191 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618EF1
#618EF1
oklch(66.1% 0.156 264.2)
- #B98A00
#B98A00
oklch(66.1% 0.136 84.3)
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 #618EF1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.017
- Cornflower Blue #6495ED ΔE 0.021
- Chefchaouen Blue #4895EF ΔE 0.027
- Dark Sky Blue #448EE4 ΔE 0.034
- Dodger Blue #1E90FF ΔE 0.048
- Lavender Blue #8B88F8 ΔE 0.054
- Cornflower #6A79F7 ΔE 0.054
- Perrywinkle #8F8CE7 ΔE 0.058
Use #618EF1 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.