#287D8E
Closest named color: Ocean (#017B92). oklch(54.7% 0.083 213.8), rgb(40, 125, 142).
Aa
White text reads best on this color (4.75:1).
About this color
#287D8E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.083 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.017 away. White text reads best on it, at 4.75:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.41:1 |
| White text | 4.75:1 |
Values
| HEX | #287D8E |
| RGB | rgb(40, 125, 142) |
| HSL | hsl(190, 56%, 36%) |
| OKLCH | oklch(54.7% 0.083 213.8) |
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 #287D8E | 4.75:1 | AA | Lc -78.2 | Fine for body text |
| Black text on #287D8E | 4.41:1 | AA large text | Lc 31.4 | Non-text elements, placeholder text |
| #287D8E text on white | 4.75:1 | AA | Lc 72.7 | Content text, not long reading |
| #287D8E text on black | 4.41:1 | AA large text | Lc -29.0 | 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
#CBDDE1
oklch(88.5% 0.02 212.6)
-
Step 300
300
#A6C7CF
oklch(80.8% 0.037 214)
-
Step 400
400
#75ABB7
oklch(70.8% 0.059 213.1)
-
Step 500
500
#4D96A5
oklch(63.2% 0.076 212.7)
-
Step 600
600 (this color)
#287D8E
oklch(54.7% 0.083 213.8)
-
Step 700
700
#1C6C7B
oklch(49.2% 0.077 213.2)
-
Step 800
800
#1B5864
oklch(42.7% 0.064 213.4)
-
Step 900
900
#1D4852
oklch(37.6% 0.05 215.3)
-
Step 950
950
#122A30
oklch(26.8% 0.032 216)
#287D8E 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) | #71798F | 0.076 |
| Deuteranopia (no green cones) | #626E8E | 0.068 |
| Tritanopia (no blue cones) | #008482 | 0.035 |
| Achromatopsia (no color) | #737373 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #287D8E
#287D8E
oklch(54.7% 0.083 213.8)
- #9B5E50
#9B5E50
oklch(54.7% 0.083 33.7)
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 #287D8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.017
- Deep Aqua #08787F ΔE 0.031
- Teal #008080 ΔE 0.031
- Teal Blue #01889F ΔE 0.036
- Cerulean #457B9D ΔE 0.036
- Sea Blue #047495 ΔE 0.037
- Bluegreen #017A79 ΔE 0.038
- Metallic Blue #4F738E ΔE 0.042
Use #287D8E 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.