#607CAB
Closest named color: Off Blue (#5684AE). oklch(58.4% 0.08 260.5), rgb(96, 124, 171).
Aa
Black text reads best on this color (4.96:1).
About this color
#607CAB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.080 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 4.96:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 4.96:1 |
| White text | 4.22:1 |
Values
| HEX | #607CAB |
| RGB | rgb(96, 124, 171) |
| HSL | hsl(218, 31%, 52%) |
| OKLCH | oklch(58.4% 0.08 260.5) |
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 #607CAB | 4.22:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #607CAB | 4.96:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #607CAB text on white | 4.22:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #607CAB text on black | 4.96:1 | AA | Lc -32.5 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2DAE7
oklch(88.6% 0.02 260.2)
-
Step 300
300
#B4C1D8
oklch(80.8% 0.036 261.9)
-
Step 400
400
#8CA2C5
oklch(70.8% 0.057 259.6)
-
Step 500
500
#708AB6
oklch(63% 0.073 260.7)
-
Step 600
600 (this color)
#607CAB
oklch(58.4% 0.08 260.5)
-
Step 700
700
#48618B
oklch(49.1% 0.074 260.5)
-
Step 800
800
#3B4F71
oklch(42.6% 0.062 260.7)
-
Step 900
900
#33425B
oklch(37.7% 0.047 260.4)
-
Step 950
950
#1E2735
oklch(27.1% 0.029 259.1)
#607CAB 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) | #6B7FAD | 0.018 |
| Deuteranopia (no green cones) | #6378AA | 0.011 |
| Tritanopia (no blue cones) | #44868C | 0.072 |
| Achromatopsia (no color) | #7B7B7B | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #607CAB
#607CAB
oklch(58.4% 0.08 260.5)
- #947642
#947642
oklch(58.3% 0.079 80)
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 #607CAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.023
- Dusty Blue #5A86AD ΔE 0.028
- Steel Blue #4682B4 ΔE 0.030
- Stormy Blue #507B9C ΔE 0.032
- Cool Blue #4984B8 ΔE 0.032
- Cerulean #457B9D ΔE 0.039
- Dull Blue #49759C ΔE 0.042
- Grey Blue #647D8E ΔE 0.047
Use #607CAB 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.