#617FCE
Closest named color: Soft Blue (#6488EA). oklch(60.9% 0.125 267), rgb(97, 127, 206).
Aa
Black text reads best on this color (5.43:1).
About this color
#617FCE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.125 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.045 away. Black text reads best on it, at 5.43:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.43:1 |
| White text | 3.86:1 |
Values
| HEX | #617FCE |
| RGB | rgb(97, 127, 206) |
| HSL | hsl(223, 53%, 59%) |
| OKLCH | oklch(60.9% 0.125 267) |
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 #617FCE | 3.86:1 | AA large text | Lc -71.5 | Content text, not long reading |
| Black text on #617FCE | 5.43:1 | AA | Lc 38.1 | Non-text elements, placeholder text |
| #617FCE text on white | 3.86:1 | AA large text | Lc 66.0 | Content text, not long reading |
| #617FCE text on black | 5.43:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CFD9F0
oklch(88.5% 0.033 266.9)
-
Step 300
300
#AFC0E9
oklch(80.9% 0.061 267.4)
-
Step 400
400
#859FDE
oklch(70.7% 0.097 266.7)
-
Step 500
500 (this color)
#617FCE
oklch(60.9% 0.125 267)
-
Step 600
600
#4F6EC2
oklch(55.6% 0.135 266.8)
-
Step 700
700
#405BA8
oklch(49% 0.127 267.1)
-
Step 800
800
#354B88
oklch(42.7% 0.105 267)
-
Step 900
900
#2E3F6D
oklch(37.7% 0.082 267.1)
-
Step 950
950
#1B2540
oklch(27% 0.052 267.5)
#617FCE 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) | #5F87D1 | 0.021 |
| Deuteranopia (no green cones) | #537DCC | 0.018 |
| Tritanopia (no blue cones) | #2A909D | 0.112 |
| Achromatopsia (no color) | #828282 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617FCE
#617FCE
oklch(60.9% 0.125 267)
- #A37D00
#A37D00
oklch(61% 0.125 87.2)
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 #617FCE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.045
- Cool Blue #4984B8 ΔE 0.048
- Dark Sky Blue #448EE4 ΔE 0.050
- Faded Blue #658CBB ΔE 0.052
- Steel Blue #4682B4 ΔE 0.053
- Windows Blue #3778BF ΔE 0.054
- Off Blue #5684AE ΔE 0.057
- Water Blue #0E87CC ΔE 0.059
Use #617FCE 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.