#617EB0
Closest named color: Off Blue (#5684AE). oklch(59.1% 0.084 261), rgb(97, 126, 176).
Aa
Black text reads best on this color (5.11:1).
About this color
#617EB0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.084 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.021 away. Black text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.11:1 |
| White text | 4.10:1 |
Values
| HEX | #617EB0 |
| RGB | rgb(97, 126, 176) |
| HSL | hsl(218, 33%, 54%) |
| OKLCH | oklch(59.1% 0.084 261) |
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 #617EB0 | 4.10:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #617EB0 | 5.11:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #617EB0 text on white | 4.10:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #617EB0 text on black | 5.11:1 | AA | Lc -33.6 | 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
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D1DAE7
oklch(88.5% 0.02 257.5)
-
Step 300
300
#B3C1DA
oklch(80.8% 0.039 262.1)
-
Step 400
400
#8BA1C7
oklch(70.6% 0.061 261.3)
-
Step 500
500
#6F8AB9
oklch(63.1% 0.078 261.3)
-
Step 600
600 (this color)
#617EB0
oklch(59.1% 0.084 261)
-
Step 700
700
#47618D
oklch(49.2% 0.078 260.6)
-
Step 800
800
#3B4F73
oklch(42.7% 0.065 261.7)
-
Step 900
900
#32425D
oklch(37.8% 0.051 260.6)
-
Step 950
950
#1E2736
oklch(27.1% 0.031 260.5)
#617EB0 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) | #6C81B2 | 0.017 |
| Deuteranopia (no green cones) | #637AAF | 0.011 |
| Tritanopia (no blue cones) | #43898F | 0.076 |
| Achromatopsia (no color) | #7D7D7D | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617EB0
#617EB0
oklch(59.1% 0.084 261)
- #977840
#977840
oklch(59% 0.083 80.8)
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 #617EB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.021
- Dusty Blue #5A86AD ΔE 0.025
- Cool Blue #4984B8 ΔE 0.028
- Steel Blue #4682B4 ΔE 0.029
- Stormy Blue #507B9C ΔE 0.039
- Faded Blue #658CBB ΔE 0.040
- Cerulean #457B9D ΔE 0.046
- Dull Blue #49759C ΔE 0.049
Use #617EB0 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.