#657191
Closest named color: Metallic Blue (#4F738E). oklch(55.1% 0.052 268.7), rgb(101, 113, 145).
Aa
White text reads best on this color (4.85:1).
About this color
#657191 is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.052 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.029 away. White text reads best on it, at 4.85:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.32:1 |
| White text | 4.85:1 |
Values
| HEX | #657191 |
| RGB | rgb(101, 113, 145) |
| HSL | hsl(224, 18%, 48%) |
| OKLCH | oklch(55.1% 0.052 268.7) |
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 #657191 | 4.85:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #657191 | 4.32:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #657191 text on white | 4.85:1 | AA | Lc 73.7 | Content text, not long reading |
| #657191 text on black | 4.32:1 | AA large text | Lc -28.0 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D5D9E2
oklch(88.5% 0.013 266.7)
-
Step 300
300
#BAC0D0
oklch(80.8% 0.023 269.4)
-
Step 400
400
#97A0B9
oklch(70.7% 0.038 269.7)
-
Step 500
500
#7D89A7
oklch(63.1% 0.047 267.9)
-
Step 600
600 (this color)
#657191
oklch(55.1% 0.052 268.7)
-
Step 700
700
#55607D
oklch(49.1% 0.049 268.4)
-
Step 800
800
#464E65
oklch(42.6% 0.04 269.7)
-
Step 900
900
#3B4153
oklch(37.7% 0.032 270.4)
-
Step 950
950
#222630
oklch(26.9% 0.02 267.9)
#657191 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) | #677392 | 0.007 |
| Deuteranopia (no green cones) | #637090 | 0.004 |
| Tritanopia (no blue cones) | #59777C | 0.046 |
| Achromatopsia (no color) | #717171 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #657191
#657191
oklch(55.1% 0.052 268.7)
- #7E714E
#7E714E
oklch(55.2% 0.053 90)
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 #657191, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.029
- Stormy Blue #507B9C ΔE 0.036
- Dull Blue #49759C ΔE 0.036
- Grey Blue #647D8E ΔE 0.037
- Battleship Gray #6C757D ΔE 0.038
- Cerulean #457B9D ΔE 0.044
- Battleship Grey #6B7C85 ΔE 0.044
- Grey Purple #826D8C ΔE 0.044
Use #657191 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.