#1F7CB2
Closest named color: Nice Blue (#107AB0). oklch(56% 0.117 240.3), rgb(31, 124, 178).
Aa
Black text reads best on this color (4.58:1).
About this color
#1F7CB2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.117 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.009 away. Black text reads best on it, at 4.58:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.58:1 |
| White text | 4.58:1 |
Values
| HEX | #1F7CB2 |
| RGB | rgb(31, 124, 178) |
| HSL | hsl(202, 70%, 41%) |
| OKLCH | oklch(56% 0.117 240.3) |
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 #1F7CB2 | 4.58:1 | AA | Lc -76.9 | Fine for body text |
| Black text on #1F7CB2 | 4.58:1 | AA | Lc 32.7 | Non-text elements, placeholder text |
| #1F7CB2 text on white | 4.58:1 | AA | Lc 71.4 | Content text, not long reading |
| #1F7CB2 text on black | 4.58:1 | AA | Lc -30.3 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF3
oklch(93.5% 0.015 241.8)
-
Step 200
200
#C9DCEB
oklch(88.5% 0.029 241.6)
-
Step 300
300
#A3C6E0
oklch(81% 0.053 240.5)
-
Step 400
400
#6EA8D0
oklch(70.7% 0.084 239.7)
-
Step 500
500
#4491C4
oklch(63% 0.108 240.5)
-
Step 600
600 (this color)
#1F7CB2
oklch(56% 0.117 240.3)
-
Step 700
700
#0B6798
oklch(49.1% 0.109 240.4)
-
Step 800
800
#11547B
oklch(42.6% 0.09 240.5)
-
Step 900
900
#184663
oklch(37.7% 0.07 240.2)
-
Step 950
950
#10293A
oklch(27% 0.044 240.8)
#1F7CB2 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) | #627DB4 | 0.059 |
| Deuteranopia (no green cones) | #4E70B1 | 0.046 |
| Tritanopia (no blue cones) | #008A8F | 0.079 |
| Achromatopsia (no color) | #757575 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F7CB2
#1F7CB2
oklch(56% 0.117 240.3)
- #A5621E
#A5621E
oklch(56% 0.117 60.8)
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 #1F7CB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.009
- Flat Blue #3C73A8 ΔE 0.029
- Windows Blue #3778BF ΔE 0.030
- Steel Blue #4682B4 ΔE 0.035
- Muted Blue #3B719F ΔE 0.039
- Cerulean #457B9D ΔE 0.039
- Blue NCS #118AB2 ΔE 0.041
- Cool Blue #4984B8 ΔE 0.041
Use #1F7CB2 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.