#617D94
Closest named color: Grey Blue (#647D8E). oklch(57.7% 0.048 243.5), rgb(97, 125, 148).
Aa
Black text reads best on this color (4.86:1).
About this color
#617D94 is a medium-dark, muted blue. In OKLCH its lightness is 58%, its chroma 0.048 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.010 away. Black text reads best on it, at 4.86:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.86:1 |
| White text | 4.31:1 |
Values
| HEX | #617D94 |
| RGB | rgb(97, 125, 148) |
| HSL | hsl(207, 21%, 48%) |
| OKLCH | oklch(57.7% 0.048 243.5) |
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 #617D94 | 4.31:1 | AA large text | Lc -75.3 | Fine for body text |
| Black text on #617D94 | 4.86:1 | AA | Lc 34.3 | Non-text elements, placeholder text |
| #617D94 text on white | 4.31:1 | AA large text | Lc 69.8 | Content text, not long reading |
| #617D94 text on black | 4.86:1 | AA | Lc -31.8 | 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
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D3DAE1
oklch(88.5% 0.012 248)
-
Step 300
300
#B5C3CE
oklch(81% 0.022 241.4)
-
Step 400
400
#8FA4B5
oklch(70.8% 0.034 242.6)
-
Step 500
500
#738DA3
oklch(63.1% 0.045 244.1)
-
Step 600
600 (this color)
#617D94
oklch(57.7% 0.048 243.5)
-
Step 700
700
#4B6478
oklch(49.1% 0.044 242.9)
-
Step 800
800
#3E5262
oklch(42.8% 0.036 242.8)
-
Step 900
900
#354450
oklch(37.8% 0.028 242.6)
-
Step 950
950
#1F282F
oklch(27.1% 0.018 241.7)
#617D94 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) | #747D95 | 0.026 |
| Deuteranopia (no green cones) | #6D7794 | 0.022 |
| Tritanopia (no blue cones) | #518384 | 0.040 |
| Achromatopsia (no color) | #7A7A7A | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617D94
#617D94
oklch(57.7% 0.048 243.5)
- #8E745C
#8E745C
oklch(57.8% 0.048 64.4)
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 #617D94, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.010
- Slate Gray #708090 ΔE 0.024
- Battleship Grey #6B7C85 ΔE 0.025
- Stormy Blue #507B9C ΔE 0.025
- Steel Grey #6F828A ΔE 0.031
- Cerulean #457B9D ΔE 0.035
- Steel #738595 ΔE 0.035
- Battleship Gray #6C757D ΔE 0.037
Use #617D94 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.