#286D8F
Closest named color: Sea Blue (#047495). oklch(50.7% 0.087 233.7), rgb(40, 109, 143).
Aa
White text reads best on this color (5.71:1).
About this color
#286D8F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.087 and its hue 234°. 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 5.71:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.67:1 |
| White text | 5.71:1 |
Values
| HEX | #286D8F |
| RGB | rgb(40, 109, 143) |
| HSL | hsl(200, 56%, 36%) |
| OKLCH | oklch(50.7% 0.087 233.7) |
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 #286D8F | 5.71:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #286D8F | 3.67:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #286D8F text on white | 5.71:1 | AA | Lc 78.3 | Fine for body text |
| #286D8F text on black | 3.67:1 | AA large text | Lc -23.5 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A7C6D8
oklch(81% 0.042 233.5)
-
Step 400
400
#76A8C4
oklch(70.6% 0.067 233.5)
-
Step 500
500
#5092B5
oklch(63% 0.086 233.5)
-
Step 600
600
#317CA1
oklch(55.6% 0.093 233.5)
-
Step 700
700 (this color)
#286D8F
oklch(50.7% 0.087 233.7)
-
Step 800
800
#1F5570
oklch(42.7% 0.072 233.9)
-
Step 900
900
#20465B
oklch(37.6% 0.056 235.2)
-
Step 950
950
#142935
oklch(26.9% 0.035 235.2)
#286D8F 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) | #5C6C91 | 0.055 |
| Deuteranopia (no green cones) | #4E628E | 0.046 |
| Tritanopia (no blue cones) | #007678 | 0.055 |
| Achromatopsia (no color) | #666666 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #286D8F
#286D8F
oklch(50.7% 0.087 233.7)
- #8C5732
#8C5732
oklch(50.8% 0.087 54.3)
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 #286D8F, 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 Blue #03719C ΔE 0.023
- Peacock Blue #016795 ΔE 0.029
- Denim #3B638C ΔE 0.031
- Muted Blue #3B719F ΔE 0.033
- Ocean #017B92 ΔE 0.042
- Metallic Blue #4F738E ΔE 0.044
- Dull Blue #49759C ΔE 0.045
Use #286D8F 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.