#5175A5
Closest named color: Dull Blue (#49759C). oklch(55.6% 0.086 255.9), rgb(81, 117, 165).
Aa
White text reads best on this color (4.73:1).
About this color
#5175A5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.086 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.018 away. White text reads best on it, at 4.73:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.43:1 |
| White text | 4.73:1 |
Values
| HEX | #5175A5 |
| RGB | rgb(81, 117, 165) |
| HSL | hsl(214, 34%, 48%) |
| OKLCH | oklch(55.6% 0.086 255.9) |
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 #5175A5 | 4.73:1 | AA | Lc -78.2 | Fine for body text |
| Black text on #5175A5 | 4.43:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #5175A5 text on white | 4.73:1 | AA | Lc 72.8 | Content text, not long reading |
| #5175A5 text on black | 4.43:1 | AA large text | Lc -28.9 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE8
oklch(88.5% 0.022 256.7)
-
Step 300
300
#B1C2DA
oklch(80.9% 0.039 257)
-
Step 400
400
#88A3C7
oklch(70.8% 0.061 255.7)
-
Step 500
500
#6A8CB9
oklch(63.2% 0.078 255.7)
-
Step 600
600 (this color)
#5175A5
oklch(55.6% 0.086 255.9)
-
Step 700
700
#42628D
oklch(49.1% 0.079 256.1)
-
Step 800
800
#365073
oklch(42.7% 0.067 256.1)
-
Step 900
900
#2F435D
oklch(37.8% 0.052 255.3)
-
Step 950
950
#1C2736
oklch(27% 0.032 256.3)
#5175A5 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) | #6278A7 | 0.024 |
| Deuteranopia (no green cones) | #5870A4 | 0.015 |
| Tritanopia (no blue cones) | #298086 | 0.076 |
| Achromatopsia (no color) | #737373 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5175A5
#5175A5
oklch(55.6% 0.086 255.9)
- #906C35
#906C35
oklch(55.6% 0.086 76)
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 #5175A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.018
- Flat Blue #3C73A8 ΔE 0.024
- Stormy Blue #507B9C ΔE 0.026
- Cerulean #457B9D ΔE 0.027
- Muted Blue #3B719F ΔE 0.029
- Metallic Blue #4F738E ΔE 0.036
- Steel Blue #4682B4 ΔE 0.038
- French Blue #436BAD ΔE 0.039
Use #5175A5 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.