#287396
Closest named color: Sea Blue (#047495). oklch(52.6% 0.091 232.6), rgb(40, 115, 150).
Aa
White text reads best on this color (5.27:1).
About this color
#287396 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.091 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.014 away. White text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.98:1 |
| White text | 5.27:1 |
Values
| HEX | #287396 |
| RGB | rgb(40, 115, 150) |
| HSL | hsl(199, 58%, 37%) |
| OKLCH | oklch(52.6% 0.091 232.6) |
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 #287396 | 5.27:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #287396 | 3.98:1 | AA large text | Lc 28.2 | Dividers and decoration only |
| #287396 text on white | 5.27:1 | AA | Lc 75.9 | Fine for body text |
| #287396 text on black | 3.98:1 | AA large text | Lc -25.8 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A7C6D7
oklch(80.9% 0.041 231.9)
-
Step 400
400
#77A8C3
oklch(70.7% 0.065 233)
-
Step 500
500
#5192B4
oklch(63% 0.084 233.1)
-
Step 600
600 (this color)
#287396
oklch(52.6% 0.091 232.6)
-
Step 700
700
#246888
oklch(49% 0.084 232.8)
-
Step 800
800
#20556F
oklch(42.6% 0.07 233.2)
-
Step 900
900
#20465A
oklch(37.6% 0.055 233.9)
-
Step 950
950
#142935
oklch(26.9% 0.035 235.2)
#287396 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) | #627298 | 0.060 |
| Deuteranopia (no green cones) | #536795 | 0.050 |
| Tritanopia (no blue cones) | #007C7F | 0.055 |
| Achromatopsia (no color) | #6C6C6C | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #287396
#287396
oklch(52.6% 0.091 232.6)
- #935B36
#935B36
oklch(52.6% 0.09 53)
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 #287396, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.014
- Ocean Blue #03719C ΔE 0.019
- Muted Blue #3B719F ΔE 0.023
- Ocean #017B92 ΔE 0.029
- Dull Blue #49759C ΔE 0.032
- Flat Blue #3C73A8 ΔE 0.035
- Metallic Blue #4F738E ΔE 0.036
- Cerulean #457B9D ΔE 0.037
Use #287396 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.