#288198
Closest named color: Teal Blue (#01889F). oklch(56.2% 0.088 218.9), rgb(40, 129, 152).
Aa
Black text reads best on this color (4.68:1).
About this color
#288198 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.088 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.021 away. Black text reads best on it, at 4.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.68:1 |
| White text | 4.48:1 |
Values
| HEX | #288198 |
| RGB | rgb(40, 129, 152) |
| HSL | hsl(192, 58%, 38%) |
| OKLCH | oklch(56.2% 0.088 218.9) |
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 #288198 | 4.48:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #288198 | 4.68:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #288198 text on white | 4.48:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #288198 text on black | 4.68:1 | AA | Lc -30.9 | 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 600.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CADDE3
oklch(88.5% 0.022 218.6)
-
Step 300
300
#A5C7D2
oklch(80.8% 0.04 219.4)
-
Step 400
400
#72ABBC
oklch(70.8% 0.064 218.6)
-
Step 500
500
#4A95AB
oklch(63.1% 0.081 219.5)
-
Step 600
600 (this color)
#288198
oklch(56.2% 0.088 218.9)
-
Step 700
700
#166B80
oklch(49% 0.082 219.2)
-
Step 800
800
#175868
oklch(42.8% 0.068 218.1)
-
Step 900
900
#1B4855
oklch(37.7% 0.053 219.9)
-
Step 950
950
#112A32
oklch(26.9% 0.034 221.3)
#288198 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) | #737D99 | 0.075 |
| Deuteranopia (no green cones) | #637298 | 0.067 |
| Tritanopia (no blue cones) | #008988 | 0.042 |
| Achromatopsia (no color) | #777777 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288198
#288198
oklch(56.2% 0.088 218.9)
- #A1624D
#A1624D
oklch(56.1% 0.088 39.2)
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 #288198, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.021
- Ocean #017B92 ΔE 0.025
- Cerulean #457B9D ΔE 0.029
- Stormy Blue #507B9C ΔE 0.037
- Blue NCS #118AB2 ΔE 0.042
- Teal #008080 ΔE 0.042
- Dark Cyan #008B8B ΔE 0.043
- Dull Blue #49759C ΔE 0.044
Use #288198 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.