#607EB3
Closest named color: Off Blue (#5684AE). oklch(59.2% 0.089 261.4), rgb(96, 126, 179).
Aa
Black text reads best on this color (5.13:1).
About this color
#607EB3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.089 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.023 away. Black text reads best on it, at 5.13:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.13:1 |
| White text | 4.09:1 |
Values
| HEX | #607EB3 |
| RGB | rgb(96, 126, 179) |
| HSL | hsl(218, 35%, 54%) |
| OKLCH | oklch(59.2% 0.089 261.4) |
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 #607EB3 | 4.09:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #607EB3 | 5.13:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #607EB3 text on white | 4.09:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #607EB3 text on black | 5.13:1 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1DAE8
oklch(88.6% 0.022 259.2)
-
Step 300
300
#B2C1DB
oklch(80.8% 0.04 261.5)
-
Step 400
400
#8BA1C9
oklch(70.6% 0.064 262.3)
-
Step 500
500
#6E8ABB
oklch(63.1% 0.081 261.3)
-
Step 600
600 (this color)
#607EB3
oklch(59.2% 0.089 261.4)
-
Step 700
700
#466090
oklch(49% 0.084 262)
-
Step 800
800
#3A4F75
oklch(42.8% 0.069 261.7)
-
Step 900
900
#32425E
oklch(37.8% 0.053 261.3)
-
Step 950
950
#1D2737
oklch(27.1% 0.033 259.6)
#607EB3 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) | #6A82B5 | 0.018 |
| Deuteranopia (no green cones) | #617AB2 | 0.011 |
| Tritanopia (no blue cones) | #3F8991 | 0.078 |
| Achromatopsia (no color) | #7D7D7D | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #607EB3
#607EB3
oklch(59.2% 0.089 261.4)
- #99783B
#99783B
oklch(59.2% 0.089 80.9)
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 #607EB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.023
- Cool Blue #4984B8 ΔE 0.027
- Dusty Blue #5A86AD ΔE 0.027
- Steel Blue #4682B4 ΔE 0.028
- Faded Blue #658CBB ΔE 0.040
- Stormy Blue #507B9C ΔE 0.042
- Cerulean #457B9D ΔE 0.048
- Windows Blue #3778BF ΔE 0.051
Use #607EB3 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.