#188DB2
Closest named color: Blue NCS (#118AB2). oklch(60.1% 0.109 225.9), rgb(24, 141, 178).
Aa
Black text reads best on this color (5.49:1).
About this color
#188DB2 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 60%, its chroma 0.109 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.010 away. Black text reads best on it, at 5.49:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.49:1 |
| White text | 3.82:1 |
Values
| HEX | #188DB2 |
| RGB | rgb(24, 141, 178) |
| HSL | hsl(194, 76%, 40%) |
| OKLCH | oklch(60.1% 0.109 225.9) |
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 #188DB2 | 3.82:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #188DB2 | 5.49:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #188DB2 text on white | 3.82:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #188DB2 text on black | 5.49:1 | AA | Lc -36.4 | 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 500.
-
Step 50
50
#F1F7F9
oklch(97.2% 0.007 219.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C5DEE8
oklch(88.5% 0.03 223.8)
-
Step 300
300
#9CC8DB
oklch(80.8% 0.054 226.2)
-
Step 400
400
#62ACC9
oklch(70.7% 0.085 225.5)
-
Step 500
500 (this color)
#188DB2
oklch(60.1% 0.109 225.9)
-
Step 600
600
#007FA2
oklch(55.5% 0.106 225.7)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005771
oklch(42.6% 0.082 226.6)
-
Step 900
900
#02495E
oklch(37.8% 0.071 225.3)
-
Step 950
950
#072B37
oklch(27% 0.045 224.7)
#188DB2 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) | #798AB4 | 0.082 |
| Deuteranopia (no green cones) | #657CB2 | 0.071 |
| Tritanopia (no blue cones) | #009899 | 0.058 |
| Achromatopsia (no color) | #828282 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #188DB2
#188DB2
oklch(60.1% 0.109 225.9)
- #B56A45
#B56A45
oklch(60% 0.109 46.2)
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 #188DB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.010
- Teal Blue #01889F ΔE 0.032
- Steel Blue #4682B4 ΔE 0.039
- Cool Blue #4984B8 ΔE 0.040
- Off Blue #5684AE ΔE 0.045
- Dusty Blue #5A86AD ΔE 0.046
- Water Blue #0E87CC ΔE 0.048
- Teal Green #0A9396 ΔE 0.053
Use #188DB2 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.