#4077CE
Closest named color: Windows Blue (#3778BF). oklch(57.5% 0.146 259.2), rgb(64, 119, 206).
Aa
Black text reads best on this color (4.74:1).
About this color
#4077CE is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.146 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.026 away. Black text reads best on it, at 4.74:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.74:1 |
| White text | 4.42:1 |
Values
| HEX | #4077CE |
| RGB | rgb(64, 119, 206) |
| HSL | hsl(217, 59%, 53%) |
| OKLCH | oklch(57.5% 0.146 259.2) |
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 #4077CE | 4.42:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #4077CE | 4.74:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #4077CE text on white | 4.42:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #4077CE text on black | 4.74:1 | AA | Lc -31.3 | 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 600.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF7
oklch(93.5% 0.02 260.2)
-
Step 200
200
#CBDAF2
oklch(88.5% 0.037 259.8)
-
Step 300
300
#A8C2EC
oklch(80.9% 0.066 259.9)
-
Step 400
400
#79A2E2
oklch(70.8% 0.105 259.1)
-
Step 500
500
#5689DA
oklch(63.1% 0.134 259.3)
-
Step 600
600 (this color)
#4077CE
oklch(57.5% 0.146 259.2)
-
Step 700
700
#2D5EAC
oklch(49% 0.136 259.4)
-
Step 800
800
#264D8C
oklch(42.7% 0.114 259.6)
-
Step 900
900
#234170
oklch(37.7% 0.088 259.1)
-
Step 950
950
#152641
oklch(26.9% 0.056 259.3)
#4077CE 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) | #4E7FD1 | 0.027 |
| Deuteranopia (no green cones) | #3672CC | 0.017 |
| Tritanopia (no blue cones) | #008B98 | 0.117 |
| Achromatopsia (no color) | #787878 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4077CE
#4077CE
oklch(57.5% 0.146 259.2)
- #9E6F00
#9E6F00
oklch(57.5% 0.119 79.2)
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 #4077CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.026
- Water Blue #0E87CC ΔE 0.048
- Royal Blue #4169E1 ΔE 0.049
- French Blue #436BAD ΔE 0.056
- Cool Blue #4984B8 ΔE 0.056
- Steel Blue #4682B4 ΔE 0.056
- Nice Blue #107AB0 ΔE 0.058
- Mid Blue #276AB3 ΔE 0.059
Use #4077CE 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.