#287188
Closest named color: Sea Blue (#047495). oklch(51.4% 0.079 222.6), rgb(40, 113, 136).
Aa
White text reads best on this color (5.51:1).
About this color
#287188 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.079 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.022 away. White text reads best on it, at 5.51:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.80:1 |
| White text | 5.51:1 |
Values
| HEX | #287188 |
| RGB | rgb(40, 113, 136) |
| HSL | hsl(194, 55%, 35%) |
| OKLCH | oklch(51.4% 0.079 222.6) |
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 #287188 | 5.51:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #287188 | 3.80:1 | AA large text | Lc 26.8 | Dividers and decoration only |
| #287188 text on white | 5.51:1 | AA | Lc 77.3 | Fine for body text |
| #287188 text on black | 3.80:1 | AA large text | Lc -24.5 | Dividers and decoration only |
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 700.
-
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
#CBDDE3
oklch(88.6% 0.021 219.7)
-
Step 300
300
#A7C7D3
oklch(81% 0.038 222.5)
-
Step 400
400
#76AABC
oklch(70.8% 0.061 221.5)
-
Step 500
500
#4F94AC
oklch(63.1% 0.078 223)
-
Step 600
600
#2E7E97
oklch(55.5% 0.085 222.4)
-
Step 700
700 (this color)
#287188
oklch(51.4% 0.079 222.6)
-
Step 800
800
#1D5769
oklch(42.8% 0.066 222.2)
-
Step 900
900
#1F4855
oklch(37.8% 0.051 221.4)
-
Step 950
950
#132A32
oklch(27% 0.033 222.8)
#287188 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) | #646E89 | 0.064 |
| Deuteranopia (no green cones) | #566488 | 0.057 |
| Tritanopia (no blue cones) | #007878 | 0.042 |
| Achromatopsia (no color) | #696969 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #287188
#287188
oklch(51.4% 0.079 222.6)
- #8D5742
#8D5742
oklch(51.2% 0.079 41.9)
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 #287188, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.022
- Ocean #017B92 ΔE 0.030
- Deep Aqua #08787F ΔE 0.032
- Ocean Blue #03719C ΔE 0.034
- Metallic Blue #4F738E ΔE 0.040
- Deep Turquoise #017374 ΔE 0.040
- Muted Blue #3B719F ΔE 0.042
- Bluegreen #017A79 ΔE 0.044
Use #287188 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.