#1F5866
Closest named color: Petrol (#005F6A). oklch(43% 0.062 217), rgb(31, 88, 102).
Aa
White text reads best on this color (7.93:1).
About this color
#1F5866 is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.062 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.023 away. White text reads best on it, at 7.93:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #1F5866 |
| RGB | rgb(31, 88, 102) |
| HSL | hsl(192, 53%, 26%) |
| OKLCH | oklch(43% 0.062 217) |
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 #1F5866 | 7.93:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #1F5866 | 2.64:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #1F5866 text on white | 7.93:1 | AAA | Lc 87.3 | Fine for body text |
| #1F5866 text on black | 2.64:1 | Fails | Lc -14.8 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE2
oklch(88.6% 0.021 216.2)
-
Step 300
300
#A7C7D0
oklch(80.9% 0.037 216.6)
-
Step 400
400
#76AAB8
oklch(70.6% 0.058 216.4)
-
Step 500
500
#5095A7
oklch(63.2% 0.075 216.8)
-
Step 600
600
#307F92
oklch(55.6% 0.081 216.6)
-
Step 700
700
#216B7D
oklch(49.1% 0.076 217.5)
-
Step 800
800 (this color)
#1F5866
oklch(43% 0.062 217)
-
Step 900
900
#1F4852
oklch(37.7% 0.049 216)
-
Step 950
950
#132A30
oklch(26.9% 0.031 216.7)
#1F5866 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) | #4F5567 | 0.055 |
| Deuteranopia (no green cones) | #454E66 | 0.049 |
| Tritanopia (no blue cones) | #005D5C | 0.030 |
| Achromatopsia (no color) | #515151 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F5866
#1F5866
oklch(43% 0.062 217)
- #6D4337
#6D4337
oklch(42.9% 0.062 36.7)
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 #1F5866, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.023
- Deep Teal #00555A ΔE 0.028
- Dark Slate Gray #2F4F4F ΔE 0.041
- YInMn Blue #415A77 ΔE 0.048
- Dark Green Blue #1F6357 ΔE 0.050
- Dark Aqua #05696B ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.053
- Dark Teal #014D4E ΔE 0.054
Use #1F5866 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.