#287C8E
Closest named color: Ocean (#017B92). oklch(54.5% 0.083 215), rgb(40, 124, 142).
Aa
White text reads best on this color (4.81:1).
About this color
#287C8E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.083 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.015 away. White text reads best on it, at 4.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.36:1 |
| White text | 4.81:1 |
Values
| HEX | #287C8E |
| RGB | rgb(40, 124, 142) |
| HSL | hsl(191, 56%, 36%) |
| OKLCH | oklch(54.5% 0.083 215) |
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 #287C8E | 4.81:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #287C8E | 4.36:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #287C8E text on white | 4.81:1 | AA | Lc 73.1 | Content text, not long reading |
| #287C8E text on black | 4.36:1 | AA large text | Lc -28.6 | 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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE2
oklch(88.6% 0.021 216.2)
-
Step 300
300
#A6C7D0
oklch(80.8% 0.038 216.1)
-
Step 400
400
#75ABB8
oklch(70.8% 0.06 214.4)
-
Step 500
500
#4E95A6
oklch(63% 0.076 215.3)
-
Step 600
600 (this color)
#287C8E
oklch(54.5% 0.083 215)
-
Step 700
700
#1D6C7C
oklch(49.2% 0.077 214.5)
-
Step 800
800
#1C5865
oklch(42.8% 0.064 215)
-
Step 900
900
#1E4852
oklch(37.6% 0.049 215.6)
-
Step 950
950
#132A30
oklch(26.9% 0.031 216.7)
#287C8E 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) | #6F788F | 0.073 |
| Deuteranopia (no green cones) | #616D8E | 0.067 |
| Tritanopia (no blue cones) | #008382 | 0.035 |
| Achromatopsia (no color) | #727272 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #287C8E
#287C8E
oklch(54.5% 0.083 215)
- #9A5E4F
#9A5E4F
oklch(54.5% 0.083 34.8)
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 #287C8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.015
- Deep Aqua #08787F ΔE 0.030
- Teal #008080 ΔE 0.032
- Sea Blue #047495 ΔE 0.034
- Cerulean #457B9D ΔE 0.036
- Teal Blue #01889F ΔE 0.038
- Bluegreen #017A79 ΔE 0.038
- Metallic Blue #4F738E ΔE 0.040
Use #287C8E 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.