#188BAD
Closest named color: Blue NCS (#118AB2). oklch(59.3% 0.106 224.2), rgb(24, 139, 173).
Aa
Black text reads best on this color (5.33:1).
About this color
#188BAD is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.106 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.009 away. Black text reads best on it, at 5.33:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.33:1 |
| White text | 3.93:1 |
Values
| HEX | #188BAD |
| RGB | rgb(24, 139, 173) |
| HSL | hsl(194, 76%, 39%) |
| OKLCH | oklch(59.3% 0.106 224.2) |
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 #188BAD | 3.93:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #188BAD | 5.33:1 | AA | Lc 37.8 | Non-text elements, placeholder text |
| #188BAD text on white | 3.93:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #188BAD text on black | 5.33:1 | AA | Lc -35.4 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C7DDE6
oklch(88.4% 0.027 224.3)
-
Step 300
300
#A0C8D8
oklch(80.9% 0.048 224.2)
-
Step 400
400
#69ABC4
oklch(70.6% 0.076 224.2)
-
Step 500
500
#3996B5
oklch(63.1% 0.097 223.8)
-
Step 600
600 (this color)
#188BAD
oklch(59.3% 0.106 224.2)
-
Step 700
700
#006B87
oklch(49% 0.092 224)
-
Step 800
800
#00586F
oklch(42.7% 0.08 223.4)
-
Step 900
900
#0F485B
oklch(37.6% 0.064 225.4)
-
Step 950
950
#0C2B35
oklch(27.1% 0.04 222.7)
#188BAD 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) | #7888AF | 0.082 |
| Deuteranopia (no green cones) | #657AAD | 0.072 |
| Tritanopia (no blue cones) | #009596 | 0.054 |
| Achromatopsia (no color) | #808080 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #188BAD
#188BAD
oklch(59.3% 0.106 224.2)
- #B26847
#B26847
oklch(59.3% 0.106 44.3)
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 #188BAD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.009
- Teal Blue #01889F ΔE 0.023
- Steel Blue #4682B4 ΔE 0.039
- Cool Blue #4984B8 ΔE 0.041
- Off Blue #5684AE ΔE 0.045
- Dusty Blue #5A86AD ΔE 0.047
- Cerulean #457B9D ΔE 0.049
- Teal Green #0A9396 ΔE 0.049
Use #188BAD 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.