#2185A8
Closest named color: Blue NCS (#118AB2). oklch(57.7% 0.102 227), rgb(33, 133, 168).
Aa
Black text reads best on this color (4.98:1).
About this color
#2185A8 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.102 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.018 away. Black text reads best on it, at 4.98:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 4.98:1 |
| White text | 4.21:1 |
Values
| HEX | #2185A8 |
| RGB | rgb(33, 133, 168) |
| HSL | hsl(196, 67%, 39%) |
| OKLCH | oklch(57.7% 0.102 227) |
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 #2185A8 | 4.21:1 | AA large text | Lc -74.2 | Content text, not long reading |
| Black text on #2185A8 | 4.98:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #2185A8 text on white | 4.21:1 | AA large text | Lc 68.7 | Content text, not long reading |
| #2185A8 text on black | 4.98:1 | AA | Lc -33.0 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE6
oklch(88.5% 0.025 226.5)
-
Step 300
300
#A2C7D8
oklch(80.8% 0.046 227.5)
-
Step 400
400
#6EAAC4
oklch(70.7% 0.073 227.3)
-
Step 500
500
#4195B5
oklch(63.2% 0.094 226.3)
-
Step 600
600 (this color)
#2185A8
oklch(57.7% 0.102 227)
-
Step 700
700
#016B8A
oklch(49.2% 0.094 226.6)
-
Step 800
800
#0B5770
oklch(42.7% 0.078 226.9)
-
Step 900
900
#16485B
oklch(37.8% 0.061 227.3)
-
Step 950
950
#0F2A35
oklch(27% 0.038 227.5)
#2185A8 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) | #7282AA | 0.075 |
| Deuteranopia (no green cones) | #6076A8 | 0.064 |
| Tritanopia (no blue cones) | #008F91 | 0.054 |
| Achromatopsia (no color) | #7B7B7B | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2185A8
#2185A8
oklch(57.7% 0.102 227)
- #AA6542
#AA6542
oklch(57.6% 0.102 46.9)
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 #2185A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.018
- Teal Blue #01889F ΔE 0.021
- Cerulean #457B9D ΔE 0.034
- Steel Blue #4682B4 ΔE 0.035
- Nice Blue #107AB0 ΔE 0.039
- Cool Blue #4984B8 ΔE 0.040
- Stormy Blue #507B9C ΔE 0.041
- Off Blue #5684AE ΔE 0.043
Use #2185A8 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.