#618FEB
Closest named color: Cornflower Blue (#6495ED). oklch(65.9% 0.146 262.9), rgb(97, 143, 235).
Aa
Black text reads best on this color (6.63:1).
About this color
#618FEB is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.146 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.017 away. Black text reads best on it, at 6.63:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.63:1 |
| White text | 3.16:1 |
Values
| HEX | #618FEB |
| RGB | rgb(97, 143, 235) |
| HSL | hsl(220, 78%, 65%) |
| OKLCH | oklch(65.9% 0.146 262.9) |
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 #618FEB | 3.16:1 | AA large text | Lc -64.0 | Content text, not long reading |
| Black text on #618FEB | 6.63:1 | AA | Lc 45.5 | Large or bold text, headings |
| #618FEB text on white | 3.16:1 | AA large text | Lc 58.6 | Large or bold text, headings |
| #618FEB text on black | 6.63:1 | AA | Lc -43.2 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CBDAF4
oklch(88.5% 0.039 261.5)
-
Step 300
300
#A8C1F0
oklch(80.9% 0.072 262.9)
-
Step 400
400
#7AA0E8
oklch(70.7% 0.114 262.5)
-
Step 500
500 (this color)
#618FEB
oklch(65.9% 0.146 262.9)
-
Step 600
600
#3F6ECF
oklch(55.6% 0.159 262.9)
-
Step 700
700
#315BB3
oklch(49% 0.148 262.9)
-
Step 800
800
#294B91
oklch(42.7% 0.122 262.8)
-
Step 900
900
#253F74
oklch(37.6% 0.096 262.9)
-
Step 950
950
#162544
oklch(26.9% 0.061 263.4)
#618FEB 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) | #6898EF | 0.026 |
| Deuteranopia (no green cones) | #558BE9 | 0.018 |
| Tritanopia (no blue cones) | #00A4B2 | 0.128 |
| Achromatopsia (no color) | #919191 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618FEB
#618FEB
oklch(65.9% 0.146 262.9)
- #BA8900
#BA8900
oklch(66% 0.136 83.1)
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 #618FEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.017
- Soft Blue #6488EA ΔE 0.018
- Chefchaouen Blue #4895EF ΔE 0.025
- Dark Sky Blue #448EE4 ΔE 0.030
- Dodger Blue #1E90FF ΔE 0.053
- Perrywinkle #8F8CE7 ΔE 0.057
- Lavender Blue #8B88F8 ΔE 0.058
- Cornflower #6A79F7 ΔE 0.061
Use #618FEB 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.