#2185C3
Closest named color: Water Blue (#0E87CC). oklch(59.1% 0.129 242.1), rgb(33, 133, 195).
Aa
Black text reads best on this color (5.20:1).
About this color
#2185C3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.129 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.014 away. Black text reads best on it, at 5.20:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.20:1 |
| White text | 4.03:1 |
Values
| HEX | #2185C3 |
| RGB | rgb(33, 133, 195) |
| HSL | hsl(203, 71%, 45%) |
| OKLCH | oklch(59.1% 0.129 242.1) |
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 #2185C3 | 4.03:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #2185C3 | 5.20:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #2185C3 text on white | 4.03:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #2185C3 text on black | 5.20:1 | AA | Lc -34.5 | 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
#E1ECF4
oklch(93.7% 0.016 239.1)
-
Step 200
200
#C7DCED
oklch(88.4% 0.033 242.4)
-
Step 300
300
#A0C6E3
oklch(80.9% 0.058 241.3)
-
Step 400
400
#6BA8D6
oklch(70.8% 0.093 242.3)
-
Step 500
500
#3D91CB
oklch(63.1% 0.119 242.3)
-
Step 600
600 (this color)
#2185C3
oklch(59.1% 0.129 242.1)
-
Step 700
700
#00679D
oklch(49.2% 0.117 242)
-
Step 800
800
#055480
oklch(42.7% 0.099 241.9)
-
Step 900
900
#134667
oklch(37.8% 0.077 241.9)
-
Step 950
950
#0D293C
oklch(27% 0.049 241.5)
#2185C3 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) | #6886C6 | 0.061 |
| Deuteranopia (no green cones) | #5178C2 | 0.046 |
| Tritanopia (no blue cones) | #00949B | 0.087 |
| Achromatopsia (no color) | #7E7E7E | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2185C3
#2185C3
oklch(59.1% 0.129 242.1)
- #B36916
#B36916
oklch(59.1% 0.129 61.7)
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 #2185C3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.014
- Cool Blue #4984B8 ΔE 0.030
- Steel Blue #4682B4 ΔE 0.030
- Blue NCS #118AB2 ΔE 0.034
- Windows Blue #3778BF ΔE 0.036
- Nice Blue #107AB0 ΔE 0.041
- Off Blue #5684AE ΔE 0.048
- Dusty Blue #5A86AD ΔE 0.054
Use #2185C3 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.