#0179EC
Closest named color: Cerulean Blue (#056EEE). oklch(58.7% 0.195 255.4), rgb(1, 121, 236).
Aa
Black text reads best on this color (4.94:1).
About this color
#0179EC is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.195 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.028 away. Black text reads best on it, at 4.94:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.195) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.94:1 |
| White text | 4.24:1 |
Values
| HEX | #0179EC |
| RGB | rgb(1, 121, 236) |
| HSL | hsl(209, 99%, 46%) |
| OKLCH | oklch(58.7% 0.195 255.4) |
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 #0179EC | 4.24:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #0179EC | 4.94:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #0179EC text on white | 4.24:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #0179EC text on black | 4.94:1 | AA | Lc -33.2 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C4DBFA
oklch(88.4% 0.05 255.9)
-
Step 300
300
#9BC4F9
oklch(81% 0.087 255.1)
-
Step 400
400
#61A3F6
oklch(70.8% 0.14 255)
-
Step 500
500
#2F88F3
oklch(63% 0.181 255.6)
-
Step 600
600 (this color)
#0179EC
oklch(58.7% 0.195 255.4)
-
Step 700
700
#005EBA
oklch(49.1% 0.163 255.3)
-
Step 800
800
#004D9A
oklch(42.7% 0.142 255.2)
-
Step 900
900
#09407E
oklch(37.6% 0.118 255.6)
-
Step 950
950
#09264A
oklch(27% 0.075 255.8)
#0179EC 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) | #3085F0 | 0.039 |
| Deuteranopia (no green cones) | #0072EA | 0.018 |
| Tritanopia (no blue cones) | #0095A7 | 0.145 |
| Achromatopsia (no color) | #7B7B7B | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0179EC
#0179EC
oklch(58.7% 0.195 255.4)
- #A67000
#A67000
oklch(58.7% 0.124 75.5)
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 #0179EC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.028
- Clear Blue #247AFD ΔE 0.029
- Royal Blue #4169E1 ΔE 0.046
- Bright Blue #0165FC ΔE 0.055
- Neon Blue #4361EE ΔE 0.061
- Dodger Blue #1E90FF ΔE 0.066
- Water Blue #0E87CC ΔE 0.067
- Azul #1D5DEC ΔE 0.067
Use #0179EC 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.