#03687A
Closest named color: Dark Aqua (#05696B). oklch(47.6% 0.083 215.2), rgb(3, 104, 122).
Aa
White text reads best on this color (6.43:1).
About this color
#03687A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.083 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.026 away. White text reads best on it, at 6.43:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.26:1 |
| White text | 6.43:1 |
Values
| HEX | #03687A |
| RGB | rgb(3, 104, 122) |
| HSL | hsl(189, 95%, 25%) |
| OKLCH | oklch(47.6% 0.083 215.2) |
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 #03687A | 6.43:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #03687A | 3.26:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #03687A text on white | 6.43:1 | AA | Lc 81.4 | Fine for body text |
| #03687A text on black | 3.26:1 | AA large text | Lc -20.4 | 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 700.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#C9DDE2
oklch(88.4% 0.022 214.4)
-
Step 300
300
#A4C8D1
oklch(81% 0.04 214.6)
-
Step 400
400
#70ABBA
oklch(70.6% 0.065 215.5)
-
Step 500
500
#4696A9
oklch(63.1% 0.083 215.6)
-
Step 600
600
#1F8094
oklch(55.5% 0.09 215.3)
-
Step 700
700 (this color)
#03687A
oklch(47.6% 0.083 215.2)
-
Step 800
800
#125867
oklch(42.6% 0.069 216.1)
-
Step 900
900
#194954
oklch(37.8% 0.054 215.6)
-
Step 950
950
#102B31
oklch(27.1% 0.034 214.3)
#03687A 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) | #5C647B | 0.075 |
| Deuteranopia (no green cones) | #4D5A7A | 0.066 |
| Tritanopia (no blue cones) | #006F6E | 0.034 |
| Achromatopsia (no color) | #5F5F5F | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03687A
#03687A
oklch(47.6% 0.083 215.2)
- #854A3B
#854A3B
oklch(47.6% 0.084 35.2)
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 #03687A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.026
- Petrol #005F6A ΔE 0.034
- Deep Turquoise #017374 ΔE 0.039
- Dark Aquamarine #017371 ΔE 0.042
- Peacock Blue #016795 ΔE 0.046
- Deep Aqua #08787F ΔE 0.050
- Sea Blue #047495 ΔE 0.051
- Denim #3B638C ΔE 0.051
Use #03687A 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.