#1F689F
Closest named color: Peacock Blue (#016795). oklch(50.1% 0.112 245.9), rgb(31, 104, 159).
Aa
White text reads best on this color (5.93:1).
About this color
#1F689F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.112 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.021 away. White text reads best on it, at 5.93:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.53:1 |
| White text | 5.93:1 |
Values
| HEX | #1F689F |
| RGB | rgb(31, 104, 159) |
| HSL | hsl(206, 67%, 37%) |
| OKLCH | oklch(50.1% 0.112 245.9) |
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 #1F689F | 5.93:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #1F689F | 3.53:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #1F689F text on white | 5.93:1 | AA | Lc 79.3 | Fine for body text |
| #1F689F text on black | 3.53:1 | AA large text | Lc -22.5 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADCEC
oklch(88.6% 0.029 244.9)
-
Step 300
300
#A5C5E2
oklch(81% 0.054 245.9)
-
Step 400
400
#72A6D4
oklch(70.6% 0.087 246.1)
-
Step 500
500
#4B8FC8
oklch(63% 0.111 246.1)
-
Step 600
600
#2A78B5
oklch(55.5% 0.121 246.3)
-
Step 700
700 (this color)
#1F689F
oklch(50.1% 0.112 245.9)
-
Step 800
800
#1A537E
oklch(42.8% 0.092 245.5)
-
Step 900
900
#1C4566
oklch(37.8% 0.073 245.8)
-
Step 950
950
#12283B
oklch(26.9% 0.045 246.6)
#1F689F 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) | #4E6AA1 | 0.044 |
| Deuteranopia (no green cones) | #3C5F9E | 0.032 |
| Tritanopia (no blue cones) | #00757C | 0.079 |
| Achromatopsia (no color) | #646464 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F689F
#1F689F
oklch(50.1% 0.112 245.9)
- #8D5400
#8D5400
oklch(50% 0.111 66.1)
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 #1F689F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.021
- Ocean Blue #03719C ΔE 0.028
- Mid Blue #276AB3 ΔE 0.033
- Denim #3B638C ΔE 0.035
- Muted Blue #3B719F ΔE 0.037
- French Blue #436BAD ΔE 0.040
- Dusky Blue #475F94 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.041
Use #1F689F 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.