#05556A
Closest named color: Deep Teal (#00555A). oklch(41.7% 0.076 222.5), rgb(5, 85, 106).
Aa
White text reads best on this color (8.35:1).
About this color
#05556A is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 42%, its chroma 0.076 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.028 away. White text reads best on it, at 8.35:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.51:1 |
| White text | 8.35:1 |
Values
| HEX | #05556A |
| RGB | rgb(5, 85, 106) |
| HSL | hsl(192, 91%, 22%) |
| OKLCH | oklch(41.7% 0.076 222.5) |
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 #05556A | 8.35:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #05556A | 2.51:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #05556A text on white | 8.35:1 | AAA | Lc 88.4 | Fine for body text |
| #05556A text on black | 2.51:1 | Fails | Lc -13.8 | 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
#C9DDE5
oklch(88.5% 0.024 223.7)
-
Step 300
300
#A2C8D5
oklch(81% 0.044 220.7)
-
Step 400
400
#6DABC1
oklch(70.7% 0.071 222.5)
-
Step 500
500
#4196B1
oklch(63.2% 0.09 222)
-
Step 600
600
#157F9D
oklch(55.5% 0.099 223.2)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800 (this color)
#05556A
oklch(41.7% 0.076 222.5)
-
Step 900
900
#154858
oklch(37.6% 0.059 222.8)
-
Step 950
950
#0F2A34
oklch(26.9% 0.038 225.1)
#05556A 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) | #49536B | 0.060 |
| Deuteranopia (no green cones) | #3C4A6A | 0.052 |
| Tritanopia (no blue cones) | #005B5C | 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°).
- #05556A
#05556A
oklch(41.7% 0.076 222.5)
- #6E3D2A
#6E3D2A
oklch(41.6% 0.075 41.7)
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 #05556A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.028
- Petrol #005F6A ΔE 0.033
- Deep Sea Blue #015482 ΔE 0.042
- Dark Slate Gray #2F4F4F ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.049
- Dark Teal #014D4E ΔE 0.049
- Light Navy #155084 ΔE 0.051
- Charcoal #264653 ΔE 0.053
Use #05556A 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.