#0177C8
Closest named color: Windows Blue (#3778BF). oklch(55.8% 0.153 248.8), rgb(1, 119, 200).
Aa
White text reads best on this color (4.69:1).
About this color
#0177C8 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.153 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.027 away. White text reads best on it, at 4.69:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.47:1 |
| White text | 4.69:1 |
Values
| HEX | #0177C8 |
| RGB | rgb(1, 119, 200) |
| HSL | hsl(204, 99%, 39%) |
| OKLCH | oklch(55.8% 0.153 248.8) |
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 #0177C8 | 4.69:1 | AA | Lc -77.4 | Fine for body text |
| Black text on #0177C8 | 4.47:1 | AA large text | Lc 32.2 | Non-text elements, placeholder text |
| #0177C8 text on white | 4.69:1 | AA | Lc 71.9 | Content text, not long reading |
| #0177C8 text on black | 4.47:1 | AA large text | Lc -29.8 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C6DCF2
oklch(88.5% 0.038 248.3)
-
Step 300
300
#9EC5EC
oklch(80.9% 0.069 248.7)
-
Step 400
400
#67A6E2
oklch(70.7% 0.11 248.5)
-
Step 500
500
#388EDA
oklch(63.1% 0.141 248.8)
-
Step 600
600 (this color)
#0177C8
oklch(55.8% 0.153 248.8)
-
Step 700
700
#0063A9
oklch(49% 0.136 249.1)
-
Step 800
800
#00518B
oklch(42.6% 0.117 248.8)
-
Step 900
900
#104470
oklch(37.8% 0.092 248.9)
-
Step 950
950
#0C2841
oklch(27% 0.058 248.6)
#0177C8 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) | #4E7CCB | 0.049 |
| Deuteranopia (no green cones) | #2E6DC6 | 0.029 |
| Tritanopia (no blue cones) | #008B96 | 0.109 |
| Achromatopsia (no color) | #747474 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0177C8
#0177C8
oklch(55.8% 0.153 248.8)
- #A16400
#A16400
oklch(55.7% 0.122 68.7)
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 #0177C8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.027
- Nice Blue #107AB0 ΔE 0.040
- Mid Blue #276AB3 ΔE 0.044
- Water Blue #0E87CC ΔE 0.045
- Flat Blue #3C73A8 ΔE 0.053
- French Blue #436BAD ΔE 0.054
- Steel Blue #4682B4 ΔE 0.062
- Royal Blue #4169E1 ΔE 0.063
Use #0177C8 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.