#607DB9
Closest named color: Cool Blue (#4984B8). oklch(59.3% 0.098 264), rgb(96, 125, 185).
Aa
Black text reads best on this color (5.13:1).
About this color
#607DB9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.098 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.030 away. Black text reads best on it, at 5.13:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.13:1 |
| White text | 4.09:1 |
Values
| HEX | #607DB9 |
| RGB | rgb(96, 125, 185) |
| HSL | hsl(220, 39%, 55%) |
| OKLCH | oklch(59.3% 0.098 264) |
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 #607DB9 | 4.09:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #607DB9 | 5.13:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #607DB9 text on white | 4.09:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #607DB9 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D1D9EA
oklch(88.4% 0.025 265.6)
-
Step 300
300
#B2C1DE
oklch(80.9% 0.044 263.6)
-
Step 400
400
#8AA1CE
oklch(70.8% 0.071 263.6)
-
Step 500
500
#6D89C1
oklch(63.1% 0.091 263.6)
-
Step 600
600 (this color)
#607DB9
oklch(59.3% 0.098 264)
-
Step 700
700
#465F95
oklch(49.1% 0.092 264.4)
-
Step 800
800
#394E79
oklch(42.7% 0.077 263.7)
-
Step 900
900
#314161
oklch(37.7% 0.059 263.5)
-
Step 950
950
#1D2639
oklch(27% 0.038 264.5)
#607DB9 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) | #6782BC | 0.017 |
| Deuteranopia (no green cones) | #5D7AB8 | 0.010 |
| Tritanopia (no blue cones) | #3B8A93 | 0.088 |
| Achromatopsia (no color) | #7D7D7D | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #607DB9
#607DB9
oklch(59.3% 0.098 264)
- #9A7931
#9A7931
oklch(59.4% 0.098 84)
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 #607DB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.030
- Off Blue #5684AE ΔE 0.031
- Steel Blue #4682B4 ΔE 0.032
- Dusty Blue #5A86AD ΔE 0.036
- Faded Blue #658CBB ΔE 0.043
- Windows Blue #3778BF ΔE 0.047
- Stormy Blue #507B9C ΔE 0.050
- Cerulean #457B9D ΔE 0.055
Use #607DB9 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.