#5878DB
Closest named color: Cornflower (#6A79F7). oklch(59.7% 0.155 268), rgb(88, 120, 219).
Aa
Black text reads best on this color (5.12:1).
About this color
#5878DB is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.155 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.048 away. Black text reads best on it, at 5.12:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.12:1 |
| White text | 4.09:1 |
Values
| HEX | #5878DB |
| RGB | rgb(88, 120, 219) |
| HSL | hsl(225, 65%, 60%) |
| OKLCH | oklch(59.7% 0.155 268) |
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 #5878DB | 4.09:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #5878DB | 5.12:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #5878DB text on white | 4.09:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #5878DB text on black | 5.12:1 | AA | Lc -33.8 | 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
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F6
oklch(88.5% 0.042 267.7)
-
Step 300
300
#ACC0F3
oklch(81% 0.076 268)
-
Step 400
400
#809DEC
oklch(70.7% 0.121 267.9)
-
Step 500
500 (this color)
#5878DB
oklch(59.7% 0.155 268)
-
Step 600
600
#4A6AD5
oklch(55.8% 0.168 268)
-
Step 700
700
#3B57B8
oklch(49% 0.157 268)
-
Step 800
800
#314895
oklch(42.7% 0.129 268)
-
Step 900
900
#2B3D77
oklch(37.7% 0.101 268.3)
-
Step 950
950
#192445
oklch(26.9% 0.063 268.1)
#5878DB 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) | #4984DF | 0.032 |
| Deuteranopia (no green cones) | #3578D9 | 0.033 |
| Tritanopia (no blue cones) | #008E9F | 0.134 |
| Achromatopsia (no color) | #7D7D7D | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5878DB
#5878DB
oklch(59.7% 0.155 268)
- #9E7A00
#9E7A00
oklch(59.8% 0.122 87.9)
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 #5878DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.048
- Soft Blue #6488EA ΔE 0.049
- Royal Blue #4169E1 ΔE 0.050
- Windows Blue #3778BF ΔE 0.056
- Dark Sky Blue #448EE4 ΔE 0.057
- Dark Periwinkle #665FD1 ΔE 0.062
- Clear Blue #247AFD ΔE 0.063
- Medium Slate Blue #7B68EE ΔE 0.066
Use #5878DB 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.