#617987
Closest named color: Grey Blue (#647D8E). oklch(56.2% 0.035 233.8), rgb(97, 121, 135).
Aa
Black text reads best on this color (4.59:1).
About this color
#617987 is a medium-dark, muted blue. In OKLCH its lightness is 56%, its chroma 0.035 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.015 away. Black text reads best on it, at 4.59:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.59:1 |
| White text | 4.57:1 |
Values
| HEX | #617987 |
| RGB | rgb(97, 121, 135) |
| HSL | hsl(202, 16%, 45%) |
| OKLCH | oklch(56.2% 0.035 233.8) |
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 #617987 | 4.57:1 | AA | Lc -77.2 | Fine for body text |
| Black text on #617987 | 4.59:1 | AA | Lc 32.3 | Non-text elements, placeholder text |
| #617987 text on white | 4.57:1 | AA | Lc 71.8 | Content text, not long reading |
| #617987 text on black | 4.59:1 | AA | Lc -29.9 | Dividers and decoration only |
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
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D4DADE
oklch(88.5% 0.009 236.6)
-
Step 300
300
#B7C3C9
oklch(81% 0.016 229)
-
Step 400
400
#92A4AE
oklch(70.8% 0.025 232)
-
Step 500
500
#778D9A
oklch(63.1% 0.032 233.9)
-
Step 600
600 (this color)
#617987
oklch(56.2% 0.035 233.8)
-
Step 700
700
#4F6471
oklch(49.1% 0.033 235.5)
-
Step 800
800
#40525C
oklch(42.7% 0.028 232.6)
-
Step 900
900
#37444B
oklch(37.8% 0.021 231.5)
-
Step 950
950
#20282C
oklch(27.1% 0.014 229.5)
#617987 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) | #727888 | 0.024 |
| Deuteranopia (no green cones) | #6D7487 | 0.021 |
| Tritanopia (no blue cones) | #567D7D | 0.027 |
| Achromatopsia (no color) | #767676 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617987
#617987
oklch(56.2% 0.035 233.8)
- #867062
#867062
oklch(56.2% 0.035 54.3)
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 #617987, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.015
- Battleship Grey #6B7C85 ΔE 0.017
- Battleship Gray #6C757D ΔE 0.020
- Slate Gray #708090 ΔE 0.032
- Metallic Blue #4F738E ΔE 0.033
- Steel Grey #6F828A ΔE 0.034
- Stormy Blue #507B9C ΔE 0.036
- Cerulean #457B9D ΔE 0.043
Use #617987 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.