#607F9C
Closest named color: Grey Blue (#647D8E). oklch(58.4% 0.057 247.1), rgb(96, 127, 156).
Aa
Black text reads best on this color (5.01:1).
About this color
#607F9C is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.057 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.021 away. Black text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 5.01:1 |
| White text | 4.18:1 |
Values
| HEX | #607F9C |
| RGB | rgb(96, 127, 156) |
| HSL | hsl(209, 24%, 49%) |
| OKLCH | oklch(58.4% 0.057 247.1) |
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 #607F9C | 4.18:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #607F9C | 5.01:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #607F9C text on white | 4.18:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #607F9C text on black | 5.01:1 | AA | Lc -32.8 | 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
#B4C3D1
oklch(81% 0.026 246.3)
-
Step 400
400
#8DA4B9
oklch(70.8% 0.04 246)
-
Step 500
500
#708DA8
oklch(63.1% 0.052 246.8)
-
Step 600
600 (this color)
#607F9C
oklch(58.4% 0.057 247.1)
-
Step 700
700
#48647E
oklch(49.2% 0.053 247.1)
-
Step 800
800
#3B5166
oklch(42.6% 0.044 247.7)
-
Step 900
900
#334353
oklch(37.6% 0.034 248.8)
-
Step 950
950
#1E2831
oklch(27.1% 0.022 245.9)
#607F9C 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) | #747F9D | 0.026 |
| Deuteranopia (no green cones) | #6C799B | 0.021 |
| Tritanopia (no blue cones) | #4B8689 | 0.048 |
| Achromatopsia (no color) | #7C7C7C | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #607F9C
#607F9C
oklch(58.4% 0.057 247.1)
- #937557
#937557
oklch(58.4% 0.057 66.3)
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 #607F9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.021
- Stormy Blue #507B9C ΔE 0.023
- Slate Gray #708090 ΔE 0.028
- Dusty Blue #5A86AD ΔE 0.028
- Off Blue #5684AE ΔE 0.028
- Cerulean #457B9D ΔE 0.034
- Steel #738595 ΔE 0.035
- Battleship Grey #6B7C85 ΔE 0.035
Use #607F9C 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.