#03556C
Closest named color: Deep Teal (#00555A). oklch(41.8% 0.078 224.4), rgb(3, 85, 108).
Aa
White text reads best on this color (8.33:1).
About this color
#03556C is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 42%, its chroma 0.078 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.031 away. White text reads best on it, at 8.33:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.51:1 |
| White text | 8.33:1 |
Values
| HEX | #03556C |
| RGB | rgb(3, 85, 108) |
| HSL | hsl(193, 95%, 22%) |
| OKLCH | oklch(41.8% 0.078 224.4) |
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 #03556C | 8.33:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #03556C | 2.51:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #03556C text on white | 8.33:1 | AAA | Lc 88.3 | Fine for body text |
| #03556C text on black | 2.51:1 | Fails | Lc -13.9 | 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
#C8DDE6
oklch(88.5% 0.026 225.3)
-
Step 300
300
#A2C8D7
oklch(81% 0.046 223.9)
-
Step 400
400
#6DABC3
oklch(70.8% 0.073 224.6)
-
Step 500
500
#4095B3
oklch(63% 0.093 224.5)
-
Step 600
600
#117F9F
oklch(55.6% 0.101 224.4)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800 (this color)
#03556C
oklch(41.8% 0.078 224.4)
-
Step 900
900
#15485A
oklch(37.7% 0.061 225.6)
-
Step 950
950
#0E2A34
oklch(26.9% 0.038 224.5)
#03556C 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) | #48536D | 0.059 |
| Deuteranopia (no green cones) | #3B4A6C | 0.052 |
| Tritanopia (no blue cones) | #005C5D | 0.039 |
| Achromatopsia (no color) | #4E4E4E | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03556C
#03556C
oklch(41.8% 0.078 224.4)
- #6F3E27
#6F3E27
oklch(41.9% 0.077 45.2)
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 #03556C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.031
- Petrol #005F6A ΔE 0.034
- Deep Sea Blue #015482 ΔE 0.038
- Light Navy #155084 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.051
- Dark Teal #014D4E ΔE 0.052
- Charcoal #264653 ΔE 0.055
Use #03556C 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.