#1F657F
Closest named color: Denim (#3B638C). oklch(47.6% 0.079 227.1), rgb(31, 101, 127).
Aa
White text reads best on this color (6.50:1).
About this color
#1F657F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.079 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.035 away. White text reads best on it, at 6.50:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.22:1 |
| White text | 6.50:1 |
Values
| HEX | #1F657F |
| RGB | rgb(31, 101, 127) |
| HSL | hsl(196, 61%, 31%) |
| OKLCH | oklch(47.6% 0.079 227.1) |
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 #1F657F | 6.50:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #1F657F | 3.22:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #1F657F text on white | 6.50:1 | AA | Lc 82.0 | Fine for body text |
| #1F657F text on black | 3.22:1 | AA large text | Lc -19.9 | 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 700.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CBDCE4
oklch(88.4% 0.021 227.6)
-
Step 300
300
#A8C6D4
oklch(80.9% 0.038 227.7)
-
Step 400
400
#77A9BF
oklch(70.7% 0.062 227.2)
-
Step 500
500
#5293AE
oklch(63.1% 0.078 227)
-
Step 600
600
#337D9A
oklch(55.6% 0.085 227.3)
-
Step 700
700 (this color)
#1F657F
oklch(47.6% 0.079 227.1)
-
Step 800
800
#20566B
oklch(42.7% 0.066 227.2)
-
Step 900
900
#214757
oklch(37.7% 0.051 227.9)
-
Step 950
950
#142A33
oklch(27.1% 0.033 226.5)
#1F657F 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) | #576380 | 0.058 |
| Deuteranopia (no green cones) | #4A5A7F | 0.050 |
| Tritanopia (no blue cones) | #006C6E | 0.042 |
| Achromatopsia (no color) | #5E5E5E | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F657F
#1F657F
oklch(47.6% 0.079 227.1)
- #814E34
#814E34
oklch(47.7% 0.079 47.2)
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 #1F657F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.035
- Peacock Blue #016795 ΔE 0.035
- Petrol #005F6A ΔE 0.041
- YInMn Blue #415A77 ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.041
- Dark Aqua #05696B ΔE 0.041
- Sea Blue #047495 ΔE 0.050
- Ocean Blue #03719C ΔE 0.051
Use #1F657F 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.