#4188A7
Closest named color: Off Blue (#5684AE). oklch(59.4% 0.085 229.2), rgb(65, 136, 167).
Aa
Black text reads best on this color (5.30:1).
About this color
#4188A7 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.085 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.027 away. Black text reads best on it, at 5.30:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.30:1 |
| White text | 3.95:1 |
Values
| HEX | #4188A7 |
| RGB | rgb(65, 136, 167) |
| HSL | hsl(198, 44%, 45%) |
| OKLCH | oklch(59.4% 0.085 229.2) |
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 #4188A7 | 3.95:1 | AA large text | Lc -72.3 | Content text, not long reading |
| Black text on #4188A7 | 5.30:1 | AA | Lc 37.3 | Non-text elements, placeholder text |
| #4188A7 text on white | 3.95:1 | AA large text | Lc 66.8 | Content text, not long reading |
| #4188A7 text on black | 5.30:1 | AA | Lc -34.9 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADCE6
oklch(88.4% 0.024 231.9)
-
Step 300
300
#A6C6D6
oklch(80.8% 0.041 229.5)
-
Step 400
400
#74A9C2
oklch(70.7% 0.067 229.1)
-
Step 500
500 (this color)
#4188A7
oklch(59.4% 0.085 229.2)
-
Step 600
600
#2B7D9F
oklch(55.6% 0.093 229.7)
-
Step 700
700
#1D6988
oklch(49% 0.087 230.1)
-
Step 800
800
#1B566E
oklch(42.7% 0.071 229.2)
-
Step 900
900
#1D4759
oklch(37.7% 0.056 229)
-
Step 950
950
#122A34
oklch(27.1% 0.035 227.4)
#4188A7 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) | #7886A9 | 0.061 |
| Deuteranopia (no green cones) | #6A7BA7 | 0.054 |
| Tritanopia (no blue cones) | #009192 | 0.056 |
| Achromatopsia (no color) | #808080 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4188A7
#4188A7
oklch(59.4% 0.085 229.2)
- #A86F50
#A86F50
oklch(59.5% 0.085 49.1)
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 #4188A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.027
- Blue NCS #118AB2 ΔE 0.027
- Dusty Blue #5A86AD ΔE 0.027
- Steel Blue #4682B4 ΔE 0.031
- Teal Blue #01889F ΔE 0.033
- Cool Blue #4984B8 ΔE 0.033
- Cerulean #457B9D ΔE 0.037
- Stormy Blue #507B9C ΔE 0.037
Use #4188A7 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.