#287783
Closest named color: Deep Aqua (#08787F). oklch(52.7% 0.077 209.4), rgb(40, 119, 131).
Aa
White text reads best on this color (5.17:1).
About this color
#287783 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.077 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.015 away. White text reads best on it, at 5.17:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.05:1 |
| White text | 5.17:1 |
Values
| HEX | #287783 |
| RGB | rgb(40, 119, 131) |
| HSL | hsl(188, 53%, 34%) |
| OKLCH | oklch(52.7% 0.077 209.4) |
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 #287783 | 5.17:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #287783 | 4.05:1 | AA large text | Lc 28.7 | Dividers and decoration only |
| #287783 text on white | 5.17:1 | AA | Lc 75.4 | Fine for body text |
| #287783 text on black | 4.05:1 | AA large text | Lc -26.4 | 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
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A8C7CD
oklch(80.9% 0.034 210.7)
-
Step 400
400
#78ABB3
oklch(70.8% 0.055 208.2)
-
Step 500
500
#5295A1
oklch(63% 0.07 210.4)
-
Step 600
600 (this color)
#287783
oklch(52.7% 0.077 209.4)
-
Step 700
700
#246C77
oklch(49.2% 0.071 209.4)
-
Step 800
800
#205861
oklch(42.8% 0.059 209.8)
-
Step 900
900
#20484F
oklch(37.6% 0.046 210.4)
-
Step 950
950
#142A2E
oklch(26.9% 0.029 210.5)
#287783 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) | #6C7384 | 0.072 |
| Deuteranopia (no green cones) | #5F6983 | 0.066 |
| Tritanopia (no blue cones) | #007D7B | 0.029 |
| Achromatopsia (no color) | #6D6D6D | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #287783
#287783
oklch(52.7% 0.077 209.4)
- #925951
#925951
oklch(52.6% 0.077 28.6)
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 #287783, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.015
- Ocean #017B92 ΔE 0.024
- Bluegreen #017A79 ΔE 0.026
- Teal #008080 ΔE 0.031
- Deep Turquoise #017374 ΔE 0.032
- Sea Blue #047495 ΔE 0.035
- Dark Aquamarine #017371 ΔE 0.035
- Metallic Blue #4F738E ΔE 0.043
Use #287783 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.