#607B8D
Closest named color: Grey Blue (#647D8E). oklch(56.8% 0.042 237.7), rgb(96, 123, 141).
Aa
Black text reads best on this color (4.71:1).
About this color
#607B8D is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.042 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.008 away. Black text reads best on it, at 4.71:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #607B8D |
| RGB | rgb(96, 123, 141) |
| HSL | hsl(204, 19%, 46%) |
| OKLCH | oklch(56.8% 0.042 237.7) |
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 #607B8D | 4.45:1 | AA large text | Lc -76.4 | Fine for body text |
| Black text on #607B8D | 4.71:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #607B8D text on white | 4.45:1 | AA large text | Lc 70.9 | Content text, not long reading |
| #607B8D text on black | 4.71:1 | AA | Lc -30.8 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D3DADF
oklch(88.4% 0.01 238.5)
-
Step 300
300
#B6C3CC
oklch(81% 0.019 237.8)
-
Step 400
400
#90A4B1
oklch(70.7% 0.029 236.4)
-
Step 500
500
#748D9E
oklch(63% 0.038 238)
-
Step 600
600 (this color)
#607B8D
oklch(56.8% 0.042 237.7)
-
Step 700
700
#4C6474
oklch(49% 0.039 237.8)
-
Step 800
800
#3E525F
oklch(42.7% 0.033 237)
-
Step 900
900
#35444E
oklch(37.8% 0.026 237.6)
-
Step 950
950
#1F282D
oklch(27% 0.016 232.4)
#607B8D 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) | #737A8E | 0.026 |
| Deuteranopia (no green cones) | #6D758D | 0.023 |
| Tritanopia (no blue cones) | #528081 | 0.033 |
| Achromatopsia (no color) | #777777 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #607B8D
#607B8D
oklch(56.8% 0.042 237.7)
- #8A715F
#8A715F
oklch(56.8% 0.041 57.5)
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 #607B8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.008
- Battleship Grey #6B7C85 ΔE 0.019
- Slate Gray #708090 ΔE 0.027
- Battleship Gray #6C757D ΔE 0.028
- Stormy Blue #507B9C ΔE 0.029
- Steel Grey #6F828A ΔE 0.031
- Metallic Blue #4F738E ΔE 0.034
- Cerulean #457B9D ΔE 0.037
Use #607B8D 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.