#617FAD
Closest named color: Off Blue (#5684AE). oklch(59.2% 0.079 258.7), rgb(97, 127, 173).
Aa
Black text reads best on this color (5.14:1).
About this color
#617FAD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.079 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.017 away. Black text reads best on it, at 5.14:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.14:1 |
| White text | 4.07:1 |
Values
| HEX | #617FAD |
| RGB | rgb(97, 127, 173) |
| HSL | hsl(216, 32%, 53%) |
| OKLCH | oklch(59.2% 0.079 258.7) |
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 #617FAD | 4.07:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #617FAD | 5.14:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #617FAD text on white | 4.07:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #617FAD text on black | 5.14:1 | AA | Lc -33.7 | 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 600.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D1DAE6
oklch(88.5% 0.019 255.5)
-
Step 300
300
#B3C2D8
oklch(81% 0.035 257.9)
-
Step 400
400
#8BA2C5
oklch(70.7% 0.058 258.7)
-
Step 500
500
#6F8BB6
oklch(63.2% 0.073 258.8)
-
Step 600
600 (this color)
#617FAD
oklch(59.2% 0.079 258.7)
-
Step 700
700
#47618A
oklch(49% 0.073 259.3)
-
Step 800
800
#3A5070
oklch(42.8% 0.06 257.7)
-
Step 900
900
#32425B
oklch(37.7% 0.048 259.1)
-
Step 950
950
#1D2735
oklch(27% 0.03 256.9)
#617FAD 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) | #6E82AF | 0.020 |
| Deuteranopia (no green cones) | #657AAC | 0.014 |
| Tritanopia (no blue cones) | #45898F | 0.070 |
| Achromatopsia (no color) | #7E7E7E | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617FAD
#617FAD
oklch(59.2% 0.079 258.7)
- #977845
#977845
oklch(59.1% 0.079 78.8)
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 #617FAD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.017
- Dusty Blue #5A86AD ΔE 0.021
- Steel Blue #4682B4 ΔE 0.029
- Cool Blue #4984B8 ΔE 0.029
- Stormy Blue #507B9C ΔE 0.035
- Faded Blue #658CBB ΔE 0.039
- Cerulean #457B9D ΔE 0.043
- Lavender Gray #7E7F9A ΔE 0.047
Use #617FAD 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.