#288498
Closest named color: Teal Blue (#01889F). oklch(56.9% 0.088 215.5), rgb(40, 132, 152).
Aa
Black text reads best on this color (4.84:1).
About this color
#288498 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.088 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.016 away. Black text reads best on it, at 4.84:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.84:1 |
| White text | 4.33:1 |
Values
| HEX | #288498 |
| RGB | rgb(40, 132, 152) |
| HSL | hsl(191, 58%, 38%) |
| OKLCH | oklch(56.9% 0.088 215.5) |
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 #288498 | 4.33:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #288498 | 4.84:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #288498 text on white | 4.33:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #288498 text on black | 4.84:1 | AA | Lc -32.0 | 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
#CADDE2
oklch(88.5% 0.022 215.3)
-
Step 300
300
#A4C8D1
oklch(81% 0.04 214.6)
-
Step 400
400
#71ABBA
oklch(70.7% 0.064 215.8)
-
Step 500
500
#4896A9
oklch(63.1% 0.081 215.9)
-
Step 600
600 (this color)
#288498
oklch(56.9% 0.088 215.5)
-
Step 700
700
#126C7E
oklch(49.1% 0.082 215.5)
-
Step 800
800
#155866
oklch(42.7% 0.068 215.2)
-
Step 900
900
#1A4953
oklch(37.8% 0.053 214.1)
-
Step 950
950
#112B31
oklch(27.1% 0.034 214.8)
#288498 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) | #768099 | 0.078 |
| Deuteranopia (no green cones) | #677498 | 0.072 |
| Tritanopia (no blue cones) | #008B8A | 0.037 |
| Achromatopsia (no color) | #797979 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288498
#288498
oklch(56.9% 0.088 215.5)
- #A46453
#A46453
oklch(57% 0.087 35.7)
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 #288498, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.016
- Ocean #017B92 ΔE 0.033
- Cerulean #457B9D ΔE 0.035
- Dark Cyan #008B8B ΔE 0.036
- Blue NCS #118AB2 ΔE 0.039
- Stormy Blue #507B9C ΔE 0.041
- Teal #008080 ΔE 0.042
- Teal Green #0A9396 ΔE 0.046
Use #288498 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.