#045155
Closest named color: Deep Teal (#00555A). oklch(39.6% 0.066 200.7), rgb(4, 81, 85).
Aa
White text reads best on this color (9.07:1).
About this color
#045155 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.066 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.013 away. White text reads best on it, at 9.07:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.31:1 |
| White text | 9.07:1 |
Values
| HEX | #045155 |
| RGB | rgb(4, 81, 85) |
| HSL | hsl(183, 91%, 17%) |
| OKLCH | oklch(39.6% 0.066 200.7) |
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 #045155 | 9.07:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #045155 | 2.31:1 | Fails | Lc 13.5 | Not readable |
| #045155 text on white | 9.07:1 | AAA | Lc 90.4 | Preferred for body text |
| #045155 text on black | 2.31:1 | Fails | Lc -11.9 | 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 900.
-
Step 50
50
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E0EDEE
oklch(93.7% 0.014 202.5)
-
Step 200
200
#C5DFE0
oklch(88.5% 0.028 199.5)
-
Step 300
300
#9CCBCE
oklch(81% 0.049 201.1)
-
Step 400
400
#5FB0B5
oklch(70.8% 0.08 200.8)
-
Step 500
500
#1F9BA2
oklch(63% 0.101 200.9)
-
Step 600
600
#00838A
oklch(55.5% 0.094 201.4)
-
Step 700
700
#006E74
oklch(49% 0.083 201.4)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900 (this color)
#045155
oklch(39.6% 0.066 200.7)
-
Step 950
950
#052C2F
oklch(26.9% 0.042 202.6)
#045155 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) | #4A4D55 | 0.067 |
| Deuteranopia (no green cones) | #404555 | 0.063 |
| Tritanopia (no blue cones) | #005552 | 0.016 |
| Achromatopsia (no color) | #484848 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045155
#045155
oklch(39.6% 0.066 200.7)
- #663737
#663737
oklch(39.6% 0.067 20.5)
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 #045155, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.013
- Dark Teal #014D4E ΔE 0.016
- Dark Blue Green #005249 ΔE 0.022
- Dark Slate Gray #2F4F4F ΔE 0.029
- Charcoal #264653 ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.046
- Petrol #005F6A ΔE 0.050
- Dark Green Blue #1F6357 ΔE 0.063
Use #045155 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.