#4B79A4
Closest named color: Cerulean (#457B9D). oklch(56.1% 0.084 248), rgb(75, 121, 164).
Aa
White text reads best on this color (4.59:1).
About this color
#4B79A4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.084 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.015 away. White text reads best on it, at 4.59:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.57:1 |
| White text | 4.59:1 |
Values
| HEX | #4B79A4 |
| RGB | rgb(75, 121, 164) |
| HSL | hsl(209, 37%, 47%) |
| OKLCH | oklch(56.1% 0.084 248) |
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 #4B79A4 | 4.59:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #4B79A4 | 4.57:1 | AA | Lc 32.3 | Non-text elements, placeholder text |
| #4B79A4 text on white | 4.59:1 | AA | Lc 71.8 | Content text, not long reading |
| #4B79A4 text on black | 4.57:1 | AA | Lc -29.9 | 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
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CFDBE7
oklch(88.6% 0.021 248.1)
-
Step 300
300
#AEC3D8
oklch(80.8% 0.038 248.3)
-
Step 400
400
#83A4C5
oklch(70.6% 0.061 248.7)
-
Step 500
500
#638EB6
oklch(63.1% 0.077 247.3)
-
Step 600
600 (this color)
#4B79A4
oklch(56.1% 0.084 248)
-
Step 700
700
#3A648B
oklch(49% 0.079 248)
-
Step 800
800
#315271
oklch(42.7% 0.065 248.1)
-
Step 900
900
#2B445B
oklch(37.7% 0.05 247.3)
-
Step 950
950
#1A2835
oklch(27% 0.031 247.2)
#4B79A4 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) | #677AA6 | 0.034 |
| Deuteranopia (no green cones) | #5B71A3 | 0.027 |
| Tritanopia (no blue cones) | #158388 | 0.071 |
| Achromatopsia (no color) | #757575 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B79A4
#4B79A4
oklch(56.1% 0.084 248)
- #966B3B
#966B3B
oklch(56.2% 0.085 67.6)
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 #4B79A4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.015
- Dull Blue #49759C ΔE 0.016
- Stormy Blue #507B9C ΔE 0.016
- Flat Blue #3C73A8 ΔE 0.026
- Muted Blue #3B719F ΔE 0.030
- Steel Blue #4682B4 ΔE 0.031
- Metallic Blue #4F738E ΔE 0.034
- Off Blue #5684AE ΔE 0.036
Use #4B79A4 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.