#03665E
Closest named color: Dark Green Blue (#1F6357). oklch(45.9% 0.08 185.4), rgb(3, 102, 94).
Aa
White text reads best on this color (6.84:1).
About this color
#03665E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.080 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.014 away. White text reads best on it, at 6.84:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.06:1 |
| White text | 6.84:1 |
Values
| HEX | #03665E |
| RGB | rgb(3, 102, 94) |
| HSL | hsl(175, 94%, 21%) |
| OKLCH | oklch(45.9% 0.08 185.4) |
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 #03665E | 6.84:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #03665E | 3.06:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #03665E text on white | 6.84:1 | AA | Lc 83.2 | Fine for body text |
| #03665E text on black | 3.06:1 | AA large text | Lc -18.8 | 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 700.
-
Step 50
50
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CADEDB
oklch(88.5% 0.022 186)
-
Step 300
300
#A6C9C4
oklch(80.9% 0.038 185.9)
-
Step 400
400
#73AEA6
oklch(70.8% 0.063 185.2)
-
Step 500
500
#4A9990
oklch(63% 0.079 185.6)
-
Step 600
600
#26837A
oklch(55.5% 0.086 185.7)
-
Step 700
700 (this color)
#03665E
oklch(45.9% 0.08 185.4)
-
Step 800
800
#175B54
oklch(42.8% 0.067 185)
-
Step 900
900
#1C4A45
oklch(37.6% 0.051 185.6)
-
Step 950
950
#122C29
oklch(27.1% 0.033 185.7)
#03665E 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) | #605F5E | 0.085 |
| Deuteranopia (no green cones) | #54575F | 0.080 |
| Tritanopia (no blue cones) | #006963 | 0.011 |
| Achromatopsia (no color) | #5A5A5A | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03665E
#03665E
oklch(45.9% 0.08 185.4)
- #7D4451
#7D4451
oklch(46% 0.08 6.1)
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 #03665E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.014
- Dark Aqua #05696B ΔE 0.021
- Petrol #005F6A ΔE 0.035
- Dark Aquamarine #017371 ΔE 0.045
- Deep Turquoise #017374 ΔE 0.047
- Deep Teal #00555A ΔE 0.055
- Spruce #0A5F38 ΔE 0.057
- Pine #2B5D34 ΔE 0.060
Use #03665E 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.