#617EAF
Closest named color: Off Blue (#5684AE). oklch(59.1% 0.083 260.6), rgb(97, 126, 175).
Aa
Black text reads best on this color (5.11:1).
About this color
#617EAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.083 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.020 away. Black text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.11:1 |
| White text | 4.10:1 |
Values
| HEX | #617EAF |
| RGB | rgb(97, 126, 175) |
| HSL | hsl(218, 33%, 53%) |
| OKLCH | oklch(59.1% 0.083 260.6) |
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 #617EAF | 4.10:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #617EAF | 5.11:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #617EAF text on white | 4.10:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #617EAF text on black | 5.11:1 | AA | Lc -33.5 | 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
#B3C1D9
oklch(80.8% 0.037 261.3)
-
Step 400
400
#8CA2C6
oklch(70.8% 0.058 260.2)
-
Step 500
500
#6F8AB8
oklch(63.1% 0.076 260.9)
-
Step 600
600 (this color)
#617EAF
oklch(59.1% 0.083 260.6)
-
Step 700
700
#47618C
oklch(49.1% 0.076 260.1)
-
Step 800
800
#3B4F72
oklch(42.7% 0.064 261.2)
-
Step 900
900
#32425C
oklch(37.7% 0.049 259.9)
-
Step 950
950
#1E2736
oklch(27.1% 0.031 260.5)
#617EAF 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) | #6C81B1 | 0.017 |
| Deuteranopia (no green cones) | #637AAE | 0.011 |
| Tritanopia (no blue cones) | #44888F | 0.073 |
| Achromatopsia (no color) | #7D7D7D | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617EAF
#617EAF
oklch(59.1% 0.083 260.6)
- #977841
#977841
oklch(59.1% 0.083 80.4)
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 #617EAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.020
- Dusty Blue #5A86AD ΔE 0.024
- Cool Blue #4984B8 ΔE 0.029
- Steel Blue #4682B4 ΔE 0.029
- Stormy Blue #507B9C ΔE 0.037
- Faded Blue #658CBB ΔE 0.041
- Cerulean #457B9D ΔE 0.045
- Dull Blue #49759C ΔE 0.048
Use #617EAF 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.