#02566A
Closest named color: Deep Teal (#00555A). oklch(42% 0.076 220.8), rgb(2, 86, 106).
Aa
White text reads best on this color (8.26:1).
About this color
#02566A is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 42%, its chroma 0.076 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.027 away. White text reads best on it, at 8.26:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.54:1 |
| White text | 8.26:1 |
Values
| HEX | #02566A |
| RGB | rgb(2, 86, 106) |
| HSL | hsl(192, 96%, 21%) |
| OKLCH | oklch(42% 0.076 220.8) |
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 #02566A | 8.26:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #02566A | 2.54:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #02566A text on white | 8.26:1 | AAA | Lc 88.1 | Fine for body text |
| #02566A text on black | 2.54:1 | Fails | Lc -14.1 | Not readable |
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 800.
-
Step 50
50
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE5
oklch(88.4% 0.025 222.6)
-
Step 300
300
#A2C8D5
oklch(81% 0.044 220.7)
-
Step 400
400
#6CABC0
oklch(70.6% 0.072 221.2)
-
Step 500
500
#3F96B0
oklch(63.1% 0.091 220.8)
-
Step 600
600
#0E809C
oklch(55.6% 0.099 220.9)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800 (this color)
#02566A
oklch(42% 0.076 220.8)
-
Step 900
900
#144958
oklch(37.8% 0.06 220.7)
-
Step 950
950
#0E2B33
oklch(27.1% 0.037 218.8)
#02566A 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) | #4A536B | 0.062 |
| Deuteranopia (no green cones) | #3E4B6A | 0.055 |
| Tritanopia (no blue cones) | #005C5C | 0.035 |
| Achromatopsia (no color) | #4E4E4E | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02566A
#02566A
oklch(42% 0.076 220.8)
- #703E2B
#703E2B
oklch(42.1% 0.076 41.3)
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 #02566A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.027
- Petrol #005F6A ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.048
- Dark Teal #014D4E ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.052
- Light Navy #155084 ΔE 0.053
- Dark Blue Green #005249 ΔE 0.055
Use #02566A 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.