#0184BB
Closest named color: Blue NCS (#118AB2). oklch(58.1% 0.126 236.7), rgb(1, 132, 187).
Aa
Black text reads best on this color (5.01:1).
About this color
#0184BB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.126 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.026 away. Black text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.01:1 |
| White text | 4.18:1 |
Values
| HEX | #0184BB |
| RGB | rgb(1, 132, 187) |
| HSL | hsl(198, 99%, 37%) |
| OKLCH | oklch(58.1% 0.126 236.7) |
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 #0184BB | 4.18:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #0184BB | 5.01:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #0184BB text on white | 4.18:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #0184BB text on black | 5.01:1 | AA | Lc -33.5 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C6DDEC
oklch(88.5% 0.032 236.4)
-
Step 300
300
#9EC7E1
oklch(80.9% 0.057 236.2)
-
Step 400
400
#66A9D2
oklch(70.6% 0.091 236.9)
-
Step 500
500
#3493C6
oklch(63.1% 0.116 236.6)
-
Step 600
600 (this color)
#0184BB
oklch(58.1% 0.126 236.7)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800
#00557B
oklch(42.6% 0.093 237.2)
-
Step 900
900
#0C4764
oklch(37.7% 0.075 236.2)
-
Step 950
950
#0B2A3B
oklch(27.1% 0.048 236.5)
#0184BB 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) | #6984BD | 0.071 |
| Deuteranopia (no green cones) | #5275BA | 0.057 |
| Tritanopia (no blue cones) | #009297 | 0.079 |
| Achromatopsia (no color) | #7C7C7C | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0184BB
#0184BB
oklch(58.1% 0.126 236.7)
- #B16421
#B16421
oklch(58% 0.126 56.6)
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 #0184BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.026
- Water Blue #0E87CC ΔE 0.027
- Nice Blue #107AB0 ΔE 0.030
- Steel Blue #4682B4 ΔE 0.033
- Cool Blue #4984B8 ΔE 0.036
- Windows Blue #3778BF ΔE 0.039
- Teal Blue #01889F ΔE 0.049
- Off Blue #5684AE ΔE 0.051
Use #0184BB 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.