#607D9B
Closest named color: Stormy Blue (#507B9C). oklch(57.9% 0.057 249.7), rgb(96, 125, 155).
Aa
Black text reads best on this color (4.90:1).
About this color
#607D9B is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.057 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.020 away. Black text reads best on it, at 4.90:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.90:1 |
| White text | 4.28:1 |
Values
| HEX | #607D9B |
| RGB | rgb(96, 125, 155) |
| HSL | hsl(211, 24%, 49%) |
| OKLCH | oklch(57.9% 0.057 249.7) |
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 #607D9B | 4.28:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #607D9B | 4.90:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #607D9B text on white | 4.28:1 | AA large text | Lc 69.6 | Content text, not long reading |
| #607D9B text on black | 4.90:1 | AA | Lc -32.1 | 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
#8EA3BA
oklch(70.7% 0.041 250.8)
-
Step 500
500
#718CA9
oklch(63% 0.054 250.5)
-
Step 600
600 (this color)
#607D9B
oklch(57.9% 0.057 249.7)
-
Step 700
700
#49637E
oklch(49% 0.054 249.9)
-
Step 800
800
#3C5166
oklch(42.6% 0.044 248.9)
-
Step 900
900
#344353
oklch(37.7% 0.034 250.4)
-
Step 950
950
#1E2731
oklch(26.9% 0.023 251.3)
#607D9B 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) | #717E9C | 0.023 |
| Deuteranopia (no green cones) | #6A789A | 0.018 |
| Tritanopia (no blue cones) | #4C8487 | 0.049 |
| Achromatopsia (no color) | #7A7A7A | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #607D9B
#607D9B
oklch(57.9% 0.057 249.7)
- #907455
#907455
oklch(57.8% 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 #607D9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.020
- Grey Blue #647D8E ΔE 0.021
- Slate Gray #708090 ΔE 0.030
- Off Blue #5684AE ΔE 0.031
- Cerulean #457B9D ΔE 0.031
- Dusty Blue #5A86AD ΔE 0.032
- Battleship Grey #6B7C85 ΔE 0.035
- Dull Blue #49759C ΔE 0.038
Use #607D9B 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.