#0684BA
Closest named color: Blue NCS (#118AB2). oklch(58.1% 0.124 236.5), rgb(6, 132, 186).
Aa
Black text reads best on this color (5.01:1).
About this color
#0684BA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.124 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.024 away. Black text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.01:1 |
| White text | 4.18:1 |
Values
| HEX | #0684BA |
| RGB | rgb(6, 132, 186) |
| HSL | hsl(198, 94%, 38%) |
| OKLCH | oklch(58.1% 0.124 236.5) |
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 #0684BA | 4.18:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #0684BA | 5.01:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #0684BA text on white | 4.18:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #0684BA text on black | 5.01:1 | AA | Lc -33.4 | 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
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C7DDEB
oklch(88.6% 0.03 235.7)
-
Step 300
300
#9FC7E1
oklch(81% 0.056 236.9)
-
Step 400
400
#67A9D1
oklch(70.6% 0.089 236.5)
-
Step 500
500
#3693C5
oklch(63.1% 0.114 236.4)
-
Step 600
600 (this color)
#0684BA
oklch(58.1% 0.124 236.5)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800
#00557B
oklch(42.6% 0.093 237.2)
-
Step 900
900
#0D4764
oklch(37.7% 0.075 236.4)
-
Step 950
950
#0B2A3A
oklch(27.1% 0.047 234.9)
#0684BA 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) | #6984BC | 0.070 |
| Deuteranopia (no green cones) | #5375B9 | 0.057 |
| Tritanopia (no blue cones) | #009297 | 0.078 |
| Achromatopsia (no color) | #7C7C7C | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0684BA
#0684BA
oklch(58.1% 0.124 236.5)
- #B16423
#B16423
oklch(58% 0.125 56.1)
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 #0684BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.024
- Water Blue #0E87CC ΔE 0.028
- Nice Blue #107AB0 ΔE 0.030
- Steel Blue #4682B4 ΔE 0.032
- Cool Blue #4984B8 ΔE 0.035
- Windows Blue #3778BF ΔE 0.039
- Teal Blue #01889F ΔE 0.047
- Off Blue #5684AE ΔE 0.049
Use #0684BA 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.