#607CB4
Closest named color: Off Blue (#5684AE). oklch(58.8% 0.092 263.5), rgb(96, 124, 180).
Aa
Black text reads best on this color (5.03:1).
About this color
#607CB4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.092 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.028 away. Black text reads best on it, at 5.03:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.03:1 |
| White text | 4.16:1 |
Values
| HEX | #607CB4 |
| RGB | rgb(96, 124, 180) |
| HSL | hsl(220, 36%, 54%) |
| OKLCH | oklch(58.8% 0.092 263.5) |
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 #607CB4 | 4.16:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #607CB4 | 5.03:1 | AA | Lc 35.5 | Non-text elements, placeholder text |
| #607CB4 text on white | 4.16:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #607CB4 text on black | 5.03:1 | AA | Lc -33.0 | 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
#D1D9E9
oklch(88.4% 0.024 264.4)
-
Step 300
300
#B3C1DC
oklch(80.9% 0.041 263.6)
-
Step 400
400
#8BA1CB
oklch(70.7% 0.067 263.2)
-
Step 500
500
#6F89BD
oklch(63.1% 0.084 263.7)
-
Step 600
600 (this color)
#607CB4
oklch(58.8% 0.092 263.5)
-
Step 700
700
#476092
oklch(49.2% 0.086 263.3)
-
Step 800
800
#3A4E76
oklch(42.6% 0.071 263.4)
-
Step 900
900
#32415F
oklch(37.6% 0.055 263.6)
-
Step 950
950
#1D2638
oklch(26.9% 0.036 263.7)
#607CB4 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) | #6780B6 | 0.015 |
| Deuteranopia (no green cones) | #5E79B3 | 0.009 |
| Tritanopia (no blue cones) | #3F8890 | 0.083 |
| Achromatopsia (no color) | #7C7C7C | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #607CB4
#607CB4
oklch(58.8% 0.092 263.5)
- #977836
#977836
oklch(58.9% 0.093 83.9)
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 #607CB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.028
- Cool Blue #4984B8 ΔE 0.030
- Steel Blue #4682B4 ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.033
- Stormy Blue #507B9C ΔE 0.044
- Faded Blue #658CBB ΔE 0.045
- Windows Blue #3778BF ΔE 0.048
- Cerulean #457B9D ΔE 0.049
Use #607CB4 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.