#5B7191
Closest named color: Metallic Blue (#4F738E). oklch(54.4% 0.057 257.7), rgb(91, 113, 145).
Aa
White text reads best on this color (4.98:1).
About this color
#5B7191 is a medium-dark, muted blue. In OKLCH its lightness is 54%, its chroma 0.057 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.017 away. White text reads best on it, at 4.98:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.21:1 |
| White text | 4.98:1 |
Values
| HEX | #5B7191 |
| RGB | rgb(91, 113, 145) |
| HSL | hsl(216, 23%, 46%) |
| OKLCH | oklch(54.4% 0.057 257.7) |
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 #5B7191 | 4.98:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #5B7191 | 4.21:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #5B7191 text on white | 4.98:1 | AA | Lc 74.4 | Content text, not long reading |
| #5B7191 text on black | 4.21:1 | AA large text | Lc -27.3 | 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
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D3DAE3
oklch(88.6% 0.015 254.6)
-
Step 300
300
#B7C2D1
oklch(81% 0.024 256.1)
-
Step 400
400
#91A2BB
oklch(70.7% 0.041 257.9)
-
Step 500
500
#768BA9
oklch(63.1% 0.051 257.3)
-
Step 600
600 (this color)
#5B7191
oklch(54.4% 0.057 257.7)
-
Step 700
700
#4E627F
oklch(49.2% 0.053 257.6)
-
Step 800
800
#405067
oklch(42.7% 0.043 257.4)
-
Step 900
900
#364254
oklch(37.6% 0.035 258.3)
-
Step 950
950
#202731
oklch(27% 0.021 257.3)
#5B7191 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) | #667392 | 0.017 |
| Deuteranopia (no green cones) | #606D90 | 0.012 |
| Tritanopia (no blue cones) | #4A787C | 0.050 |
| Achromatopsia (no color) | #707070 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B7191
#5B7191
oklch(54.4% 0.057 257.7)
- #826C4A
#826C4A
oklch(54.4% 0.056 78)
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 #5B7191, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.017
- Dull Blue #49759C ΔE 0.025
- Stormy Blue #507B9C ΔE 0.030
- Cerulean #457B9D ΔE 0.035
- Muted Blue #3B719F ΔE 0.040
- Grey Blue #647D8E ΔE 0.040
- Battleship Gray #6C757D ΔE 0.043
- Flat Blue #3C73A8 ΔE 0.046
Use #5B7191 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.