#617DB1
Closest named color: Off Blue (#5684AE). oklch(59% 0.087 262.3), rgb(97, 125, 177).
Aa
Black text reads best on this color (5.07:1).
About this color
#617DB1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.087 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.024 away. Black text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.07:1 |
| White text | 4.13:1 |
Values
| HEX | #617DB1 |
| RGB | rgb(97, 125, 177) |
| HSL | hsl(219, 34%, 54%) |
| OKLCH | oklch(59% 0.087 262.3) |
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 #617DB1 | 4.13:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #617DB1 | 5.07:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #617DB1 text on white | 4.13:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #617DB1 text on black | 5.07:1 | AA | Lc -33.3 | 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 600.
-
Step 50
50
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1D9E8
oklch(88.4% 0.022 263.2)
-
Step 300
300
#B3C1DB
oklch(80.9% 0.04 262.9)
-
Step 400
400
#8CA1C8
oklch(70.7% 0.062 262.7)
-
Step 500
500
#6F8ABA
oklch(63.2% 0.079 261.6)
-
Step 600
600 (this color)
#617DB1
oklch(59% 0.087 262.3)
-
Step 700
700
#48608F
oklch(49.1% 0.081 263.1)
-
Step 800
800
#3B4F74
oklch(42.8% 0.067 262.2)
-
Step 900
900
#32425D
oklch(37.8% 0.051 260.6)
-
Step 950
950
#1E2637
oklch(26.9% 0.034 264.8)
#617DB1 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) | #6A81B3 | 0.017 |
| Deuteranopia (no green cones) | #6179B0 | 0.011 |
| Tritanopia (no blue cones) | #43888F | 0.078 |
| Achromatopsia (no color) | #7D7D7D | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617DB1
#617DB1
oklch(59% 0.087 262.3)
- #97783D
#97783D
oklch(59% 0.086 81.8)
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 #617DB1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.024
- Dusty Blue #5A86AD ΔE 0.029
- Cool Blue #4984B8 ΔE 0.029
- Steel Blue #4682B4 ΔE 0.030
- Stormy Blue #507B9C ΔE 0.040
- Faded Blue #658CBB ΔE 0.043
- Cerulean #457B9D ΔE 0.047
- Dull Blue #49759C ΔE 0.049
Use #617DB1 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.