#4288A0
Closest named color: Teal Blue (#01889F). oklch(59.1% 0.079 223.1), rgb(66, 136, 160).
Aa
Black text reads best on this color (5.26:1).
About this color
#4288A0 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.079 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.030 away. Black text reads best on it, at 5.26:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 5.26:1 |
| White text | 3.99:1 |
Values
| HEX | #4288A0 |
| RGB | rgb(66, 136, 160) |
| HSL | hsl(195, 42%, 44%) |
| OKLCH | oklch(59.1% 0.079 223.1) |
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 #4288A0 | 3.99:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #4288A0 | 5.26:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #4288A0 text on white | 3.99:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #4288A0 text on black | 5.26:1 | AA | Lc -34.6 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE3
oklch(88.5% 0.02 225.7)
-
Step 300
300
#A9C6D2
oklch(80.9% 0.036 224.7)
-
Step 400
400
#79A9BB
oklch(70.7% 0.057 223.2)
-
Step 500
500
#5593AA
oklch(63% 0.073 224)
-
Step 600
600 (this color)
#4288A0
oklch(59.1% 0.079 223.1)
-
Step 700
700
#286A7F
oklch(49.2% 0.074 222.5)
-
Step 800
800
#235667
oklch(42.6% 0.061 223)
-
Step 900
900
#224754
oklch(37.6% 0.048 223.3)
-
Step 950
950
#152A31
oklch(27.1% 0.03 221.5)
#4288A0 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) | #7A85A1 | 0.063 |
| Deuteranopia (no green cones) | #6D7BA0 | 0.057 |
| Tritanopia (no blue cones) | #009090 | 0.049 |
| Achromatopsia (no color) | #7F7F7F | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4288A0
#4288A0
oklch(59.1% 0.079 223.1)
- #A66E57
#A66E57
oklch(59.2% 0.079 43.1)
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 #4288A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.034
- Blue NCS #118AB2 ΔE 0.034
- Off Blue #5684AE ΔE 0.034
- Stormy Blue #507B9C ΔE 0.037
- Cerulean #457B9D ΔE 0.037
- Steel Blue #4682B4 ΔE 0.040
- Cool Blue #4984B8 ΔE 0.043
Use #4288A0 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.