#03677F
Closest named color: Dark Aqua (#05696B). oklch(47.6% 0.087 221.4), rgb(3, 103, 127).
Aa
White text reads best on this color (6.46:1).
About this color
#03677F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.087 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.036 away. White text reads best on it, at 6.46:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.25:1 |
| White text | 6.46:1 |
Values
| HEX | #03677F |
| RGB | rgb(3, 103, 127) |
| HSL | hsl(192, 95%, 25%) |
| OKLCH | oklch(47.6% 0.087 221.4) |
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 #03677F | 6.46:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #03677F | 3.25:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #03677F text on white | 6.46:1 | AA | Lc 81.5 | Fine for body text |
| #03677F text on black | 3.25:1 | AA large text | Lc -20.3 | 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
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#C9DDE4
oklch(88.5% 0.023 220.8)
-
Step 300
300
#A4C7D4
oklch(80.8% 0.042 222.4)
-
Step 400
400
#70ABBE
oklch(70.8% 0.067 220.2)
-
Step 500
500
#4695AE
oklch(63% 0.086 221.5)
-
Step 600
600
#1F7F9A
oklch(55.5% 0.093 221.7)
-
Step 700
700 (this color)
#03677F
oklch(47.6% 0.087 221.4)
-
Step 800
800
#12586B
oklch(42.8% 0.072 221)
-
Step 900
900
#194857
oklch(37.7% 0.056 222.5)
-
Step 950
950
#102A33
oklch(26.9% 0.036 223.3)
#03677F 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) | #596480 | 0.070 |
| Deuteranopia (no green cones) | #4A5A7F | 0.061 |
| Tritanopia (no blue cones) | #006F6F | 0.042 |
| Achromatopsia (no color) | #5E5E5E | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03677F
#03677F
oklch(47.6% 0.087 221.4)
- #854B34
#854B34
oklch(47.7% 0.086 42.1)
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 #03677F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.036
- Peacock Blue #016795 ΔE 0.037
- Petrol #005F6A ΔE 0.038
- Denim #3B638C ΔE 0.044
- Deep Turquoise #017374 ΔE 0.047
- Sea Blue #047495 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.049
- Dark Aquamarine #017371 ΔE 0.050
Use #03677F 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.