#607CB1
Closest named color: Off Blue (#5684AE). oklch(58.7% 0.088 262.6), rgb(96, 124, 177).
Aa
Black text reads best on this color (5.01:1).
About this color
#607CB1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.088 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.026 away. Black text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.01:1 |
| White text | 4.18:1 |
Values
| HEX | #607CB1 |
| RGB | rgb(96, 124, 177) |
| HSL | hsl(219, 34%, 54%) |
| OKLCH | oklch(58.7% 0.088 262.6) |
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 #607CB1 | 4.18:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #607CB1 | 5.01:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #607CB1 text on white | 4.18:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #607CB1 text on black | 5.01:1 | AA | Lc -32.9 | 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
#8CA1C9
oklch(70.7% 0.063 263.1)
-
Step 500
500
#6F89BB
oklch(63% 0.082 263)
-
Step 600
600 (this color)
#607CB1
oklch(58.7% 0.088 262.6)
-
Step 700
700
#47608F
oklch(49% 0.082 262.4)
-
Step 800
800
#3B4F74
oklch(42.8% 0.067 262.2)
-
Step 900
900
#32415E
oklch(37.6% 0.054 263)
-
Step 950
950
#1E2637
oklch(26.9% 0.034 264.8)
#607CB1 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) | #6980B3 | 0.017 |
| Deuteranopia (no green cones) | #6078B0 | 0.011 |
| Tritanopia (no blue cones) | #41878F | 0.078 |
| Achromatopsia (no color) | #7C7C7C | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #607CB1
#607CB1
oklch(58.7% 0.088 262.6)
- #96773A
#96773A
oklch(58.6% 0.088 82.4)
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 #607CB1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.026
- Steel Blue #4682B4 ΔE 0.030
- Cool Blue #4984B8 ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.031
- Stormy Blue #507B9C ΔE 0.039
- Faded Blue #658CBB ΔE 0.046
- Cerulean #457B9D ΔE 0.046
- Dull Blue #49759C ΔE 0.047
Use #607CB1 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.