#5B79EB
Closest named color: Cornflower (#6A79F7). oklch(61.1% 0.175 269.6), rgb(91, 121, 235).
Aa
Black text reads best on this color (5.37:1).
About this color
#5B79EB is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.175 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.026 away. Black text reads best on it, at 5.37:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.37:1 |
| White text | 3.90:1 |
Values
| HEX | #5B79EB |
| RGB | rgb(91, 121, 235) |
| HSL | hsl(228, 78%, 64%) |
| OKLCH | oklch(61.1% 0.175 269.6) |
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 #5B79EB | 3.90:1 | AA large text | Lc -71.7 | Content text, not long reading |
| Black text on #5B79EB | 5.37:1 | AA | Lc 37.9 | Non-text elements, placeholder text |
| #5B79EB text on white | 3.90:1 | AA large text | Lc 66.2 | Content text, not long reading |
| #5B79EB text on black | 5.37:1 | AA | Lc -35.5 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD8F9
oklch(88.4% 0.047 269.6)
-
Step 300
300
#AABFF9
oklch(80.9% 0.086 269)
-
Step 400
400
#7F9BF6
oklch(70.7% 0.137 269.7)
-
Step 500
500 (this color)
#5B79EB
oklch(61.1% 0.175 269.6)
-
Step 600
600
#4965E0
oklch(55.5% 0.189 269.6)
-
Step 700
700
#3B53C3
oklch(49.1% 0.177 269.6)
-
Step 800
800
#31459E
oklch(42.8% 0.146 269.6)
-
Step 900
900
#2A3B7D
oklch(37.7% 0.114 269.4)
-
Step 950
950
#192349
oklch(27% 0.072 270)
#5B79EB 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) | #3D88EF | 0.042 |
| Deuteranopia (no green cones) | #1F7BE9 | 0.047 |
| Tritanopia (no blue cones) | #0093A7 | 0.149 |
| Achromatopsia (no color) | #818181 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B79EB
#5B79EB
oklch(61.1% 0.175 269.6)
- #A17F00
#A17F00
oklch(61.2% 0.125 89.8)
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 #5B79EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.026
- Soft Blue #6488EA ΔE 0.042
- Clear Blue #247AFD ΔE 0.050
- Royal Blue #4169E1 ΔE 0.054
- Medium Slate Blue #7B68EE ΔE 0.055
- Dark Sky Blue #448EE4 ΔE 0.058
- Dodger Blue #1E90FF ΔE 0.068
- Neon Blue #4361EE ΔE 0.068
Use #5B79EB 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.