#607F9F
Closest named color: Stormy Blue (#507B9C). oklch(58.5% 0.061 249.7), rgb(96, 127, 159).
Aa
Black text reads best on this color (5.03:1).
About this color
#607F9F is a medium-dark, muted blue. In OKLCH its lightness is 59%, its chroma 0.061 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.024 away. Black text reads best on it, at 5.03:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 5.03:1 |
| White text | 4.17:1 |
Values
| HEX | #607F9F |
| RGB | rgb(96, 127, 159) |
| HSL | hsl(210, 25%, 50%) |
| OKLCH | oklch(58.5% 0.061 249.7) |
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 #607F9F | 4.17:1 | AA large text | Lc -74.2 | Content text, not long reading |
| Black text on #607F9F | 5.03:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #607F9F text on white | 4.17:1 | AA large text | Lc 68.7 | Content text, not long reading |
| #607F9F text on black | 5.03:1 | AA | Lc -33.0 | 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
#D2DAE3
oklch(88.5% 0.015 251.2)
-
Step 300
300
#B4C2D2
oklch(80.8% 0.027 251.7)
-
Step 400
400
#8CA3BB
oklch(70.6% 0.044 249.6)
-
Step 500
500
#708DAB
oklch(63.2% 0.056 249.6)
-
Step 600
600 (this color)
#607F9F
oklch(58.5% 0.061 249.7)
-
Step 700
700
#486380
oklch(49% 0.057 250.8)
-
Step 800
800
#3B5168
oklch(42.7% 0.047 250.1)
-
Step 900
900
#334354
oklch(37.6% 0.036 250.3)
-
Step 950
950
#1E2731
oklch(26.9% 0.023 251.3)
#607F9F 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) | #7380A1 | 0.026 |
| Deuteranopia (no green cones) | #6B799E | 0.021 |
| Tritanopia (no blue cones) | #4A868A | 0.051 |
| Achromatopsia (no color) | #7C7C7C | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #607F9F
#607F9F
oklch(58.5% 0.061 249.7)
- #947654
#947654
oklch(58.6% 0.061 69.7)
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 #607F9F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.024
- Off Blue #5684AE ΔE 0.025
- Dusty Blue #5A86AD ΔE 0.025
- Grey Blue #647D8E ΔE 0.026
- Slate Gray #708090 ΔE 0.031
- Cerulean #457B9D ΔE 0.034
- Steel #738595 ΔE 0.037
- Steel Blue #4682B4 ΔE 0.039
Use #607F9F 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.