#607E9B
Closest named color: Grey Blue (#647D8E). oklch(58.1% 0.057 248), rgb(96, 126, 155).
Aa
Black text reads best on this color (4.95:1).
About this color
#607E9B is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.057 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.020 away. Black text reads best on it, at 4.95:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.95:1 |
| White text | 4.23:1 |
Values
| HEX | #607E9B |
| RGB | rgb(96, 126, 155) |
| HSL | hsl(209, 24%, 49%) |
| OKLCH | oklch(58.1% 0.057 248) |
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 #607E9B | 4.23:1 | AA large text | Lc -74.7 | Content text, not long reading |
| Black text on #607E9B | 4.95:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #607E9B text on white | 4.23:1 | AA large text | Lc 69.2 | Content text, not long reading |
| #607E9B text on black | 4.95:1 | AA | Lc -32.4 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE2
oklch(88.5% 0.014 248)
-
Step 300
300
#B4C2D1
oklch(80.8% 0.026 250)
-
Step 400
400
#8DA3B9
oklch(70.6% 0.041 248.4)
-
Step 500
500
#718DA8
oklch(63.2% 0.052 247.7)
-
Step 600
600 (this color)
#607E9B
oklch(58.1% 0.057 248)
-
Step 700
700
#49647D
oklch(49.2% 0.051 247)
-
Step 800
800
#3C5166
oklch(42.6% 0.044 248.9)
-
Step 900
900
#334353
oklch(37.6% 0.034 248.8)
-
Step 950
950
#1E2831
oklch(27.1% 0.022 245.9)
#607E9B 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) | #737E9C | 0.025 |
| Deuteranopia (no green cones) | #6B789A | 0.021 |
| Tritanopia (no blue cones) | #4C8588 | 0.048 |
| Achromatopsia (no color) | #7B7B7B | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #607E9B
#607E9B
oklch(58.1% 0.057 248)
- #917556
#917556
oklch(58.1% 0.057 69.2)
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 #607E9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.020
- Stormy Blue #507B9C ΔE 0.022
- Slate Gray #708090 ΔE 0.028
- Off Blue #5684AE ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.031
- Cerulean #457B9D ΔE 0.033
- Battleship Grey #6B7C85 ΔE 0.034
- Steel #738595 ΔE 0.036
Use #607E9B 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.