#617CDC
Closest named color: Soft Blue (#6488EA). oklch(61.1% 0.149 269.8), rgb(97, 124, 220).
Aa
Black text reads best on this color (5.42:1).
About this color
#617CDC is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.149 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.036 away. Black text reads best on it, at 5.42:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.42:1 |
| White text | 3.87:1 |
Values
| HEX | #617CDC |
| RGB | rgb(97, 124, 220) |
| HSL | hsl(227, 64%, 62%) |
| OKLCH | oklch(61.1% 0.149 269.8) |
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 #617CDC | 3.87:1 | AA large text | Lc -71.5 | Content text, not long reading |
| Black text on #617CDC | 5.42:1 | AA | Lc 38.1 | Non-text elements, placeholder text |
| #617CDC text on white | 3.87:1 | AA large text | Lc 66.0 | Content text, not long reading |
| #617CDC text on black | 5.42:1 | AA | Lc -35.7 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F5
oklch(88.6% 0.04 268.5)
-
Step 300
300
#AEBFF1
oklch(80.9% 0.073 270.1)
-
Step 400
400
#849DE9
oklch(70.8% 0.115 269.4)
-
Step 500
500 (this color)
#617CDC
oklch(61.1% 0.149 269.8)
-
Step 600
600
#4F69D1
oklch(55.5% 0.163 269.9)
-
Step 700
700
#4057B5
oklch(49.1% 0.151 269.7)
-
Step 800
800
#354892
oklch(42.7% 0.124 269.7)
-
Step 900
900
#2E3D75
oklch(37.8% 0.097 270)
-
Step 950
950
#1B2444
oklch(27% 0.061 270.1)
#617CDC 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) | #5287E0 | 0.030 |
| Deuteranopia (no green cones) | #427CDA | 0.033 |
| Tritanopia (no blue cones) | #1391A1 | 0.133 |
| Achromatopsia (no color) | #818181 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617CDC
#617CDC
oklch(61.1% 0.149 269.8)
- #A17F00
#A17F00
oklch(61.2% 0.125 89.8)
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 #617CDC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.036
- Cornflower #6A79F7 ΔE 0.044
- Dark Sky Blue #448EE4 ΔE 0.050
- Windows Blue #3778BF ΔE 0.065
- Medium Slate Blue #7B68EE ΔE 0.065
- Royal Blue #4169E1 ΔE 0.066
- Chefchaouen Blue #4895EF ΔE 0.067
- Cornflower Blue #6495ED ΔE 0.067
Use #617CDC 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.