#4F75A5
Closest named color: Dull Blue (#49759C). oklch(55.5% 0.087 254.8), rgb(79, 117, 165).
Aa
White text reads best on this color (4.75:1).
About this color
#4F75A5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.087 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.016 away. White text reads best on it, at 4.75:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.42:1 |
| White text | 4.75:1 |
Values
| HEX | #4F75A5 |
| RGB | rgb(79, 117, 165) |
| HSL | hsl(213, 35%, 48%) |
| OKLCH | oklch(55.5% 0.087 254.8) |
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 #4F75A5 | 4.75:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #4F75A5 | 4.42:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #4F75A5 text on white | 4.75:1 | AA | Lc 72.9 | Content text, not long reading |
| #4F75A5 text on black | 4.42:1 | AA large text | Lc -28.8 | 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
#B0C2DA
oklch(80.8% 0.039 255.6)
-
Step 400
400
#86A3C7
oklch(70.7% 0.062 254.1)
-
Step 500
500
#688CB9
oklch(63.1% 0.079 254.4)
-
Step 600
600 (this color)
#4F75A5
oklch(55.5% 0.087 254.8)
-
Step 700
700
#40628E
oklch(49% 0.081 255.3)
-
Step 800
800
#355073
oklch(42.6% 0.067 255.3)
-
Step 900
900
#2E435D
oklch(37.7% 0.052 254.2)
-
Step 950
950
#1B2736
oklch(26.9% 0.033 254.4)
#4F75A5 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 | 0.026 |
| Deuteranopia (no green cones) | #576FA4 | 0.018 |
| Tritanopia (no blue cones) | #248086 | 0.076 |
| Achromatopsia (no color) | #737373 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F75A5
#4F75A5
oklch(55.5% 0.087 254.8)
- #916B34
#916B34
oklch(55.5% 0.087 74.4)
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 #4F75A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.016
- Flat Blue #3C73A8 ΔE 0.022
- Stormy Blue #507B9C ΔE 0.026
- Cerulean #457B9D ΔE 0.026
- Muted Blue #3B719F ΔE 0.027
- Metallic Blue #4F738E ΔE 0.036
- French Blue #436BAD ΔE 0.038
- Steel Blue #4682B4 ΔE 0.038
Use #4F75A5 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.