#0055C4
Closest named color: Blue Blue (#2242C7). oklch(47.9% 0.187 259.2), rgb(0, 85, 196).
Aa
White text reads best on this color (6.78:1).
About this color
#0055C4 is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.187 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.043 away. White text reads best on it, at 6.78:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.187) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.09:1 |
| White text | 6.78:1 |
Values
| HEX | #0055C4 |
| RGB | rgb(0, 85, 196) |
| HSL | hsl(214, 100%, 38%) |
| OKLCH | oklch(47.9% 0.187 259.2) |
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 #0055C4 | 6.78:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #0055C4 | 3.09:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #0055C4 text on white | 6.78:1 | AA | Lc 82.5 | Fine for body text |
| #0055C4 text on black | 3.09:1 | AA large text | Lc -19.4 | 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 700.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DBFB
oklch(88.6% 0.05 258.7)
-
Step 300
300
#9EC2FB
oklch(80.9% 0.09 259.4)
-
Step 400
400
#67A0FA
oklch(70.6% 0.146 259.2)
-
Step 500
500
#3C85F7
oklch(63% 0.186 259.2)
-
Step 600
600
#176BE6
oklch(55.5% 0.202 259.3)
-
Step 700
700 (this color)
#0055C4
oklch(47.9% 0.187 259.2)
-
Step 800
800
#0C49A2
oklch(42.7% 0.156 259.3)
-
Step 900
900
#143E80
oklch(37.6% 0.121 259.5)
-
Step 950
950
#0D254B
oklch(27% 0.077 259.3)
#0055C4 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) | #0064C8 | 0.039 |
| Deuteranopia (no green cones) | #0053C2 | 0.006 |
| Tritanopia (no blue cones) | #007184 | 0.141 |
| Achromatopsia (no color) | #5B5B5B | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0055C4
#0055C4
oklch(47.9% 0.187 259.2)
- #7B5500
#7B5500
oklch(47.8% 0.099 78.7)
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 #0055C4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.043
- Azul #1D5DEC ΔE 0.067
- Warm Blue #4B57DB ΔE 0.068
- Mid Blue #276AB3 ΔE 0.070
- Majorelle Blue #3F37C9 ΔE 0.070
- Sapphire #2138AB ΔE 0.077
- Blue With A Hint Of Purple #533CC6 ΔE 0.082
- Royal Blue #4169E1 ΔE 0.084
Use #0055C4 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.