#1F596B
Closest named color: Petrol (#005F6A). oklch(43.5% 0.066 222.1), rgb(31, 89, 107).
Aa
White text reads best on this color (7.77:1).
About this color
#1F596B is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.066 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.022 away. White text reads best on it, at 7.77:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.69:1 |
| White text | 7.77:1 |
Values
| HEX | #1F596B |
| RGB | rgb(31, 89, 107) |
| HSL | hsl(194, 55%, 27%) |
| OKLCH | oklch(43.5% 0.066 222.1) |
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 #1F596B | 7.77:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #1F596B | 2.69:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #1F596B text on white | 7.77:1 | AAA | Lc 86.8 | Fine for body text |
| #1F596B text on black | 2.69:1 | Fails | Lc -15.3 | 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 800.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CBDDE3
oklch(88.6% 0.021 219.7)
-
Step 300
300
#A6C7D3
oklch(80.9% 0.039 221.9)
-
Step 400
400
#75AABC
oklch(70.7% 0.062 221.2)
-
Step 500
500
#4E94AC
oklch(63% 0.079 222.7)
-
Step 600
600
#2D7E97
oklch(55.5% 0.086 222.2)
-
Step 700
700
#1F6A81
oklch(49% 0.079 222.8)
-
Step 800
800 (this color)
#1F596B
oklch(43.5% 0.066 222.1)
-
Step 900
900
#1E4855
oklch(37.8% 0.051 221)
-
Step 950
950
#132A32
oklch(27% 0.033 222.8)
#1F596B 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) | #4E576C | 0.053 |
| Deuteranopia (no green cones) | #444F6B | 0.047 |
| Tritanopia (no blue cones) | #005F5F | 0.035 |
| Achromatopsia (no color) | #525252 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F596B
#1F596B
oklch(43.5% 0.066 222.1)
- #704434
#704434
oklch(43.4% 0.066 40.7)
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 #1F596B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.022
- Deep Teal #00555A ΔE 0.035
- YInMn Blue #415A77 ΔE 0.042
- Deep Sea Blue #015482 ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.048
- Dark Aqua #05696B ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.052
- Dark Green Blue #1F6357 ΔE 0.054
Use #1F596B 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.